initial code repo

[stor4nfv.git] / src / ceph / src / test / erasure-code / TestErasureCodeShec.cc

diff --git a/src/ceph/src/test/erasure-code/TestErasureCodeShec.cc b/src/ceph/src/test/erasure-code/TestErasureCodeShec.cc
new file mode 100644 (file)
index 0000000..fab8e70
--- /dev/null
+++ b/src/ceph/src/test/erasure-code/TestErasureCodeShec.cc
@@ -0,0 +1,2820 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2014,2015 FUJITSU LIMITED
+ *
+ * Author: Shotaro Kawaguchi <kawaguchi.s@jp.fujitsu.com>
+ * Author: Takanori Nakao <nakao.takanori@jp.fujitsu.com>
+ * Author: Takeshi Miyamae <miyamae.takeshi@jp.fujitsu.com>
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ */
+
+//SUMMARY: TestErasureCodeShec
+
+#include <errno.h>
+#include <pthread.h>
+#include <stdlib.h>
+
+#include "crush/CrushWrapper.h"
+#include "osd/osd_types.h"
+#include "include/stringify.h"
+#include "erasure-code/shec/ErasureCodeShec.h"
+#include "erasure-code/ErasureCodePlugin.h"
+#include "global/global_context.h"
+#include "gtest/gtest.h"
+
+void* thread1(void* pParam);
+void* thread2(void* pParam);
+void* thread3(void* pParam);
+void* thread4(void* pParam);
+void* thread5(void* pParam);
+
+static int g_flag = 0;
+
+TEST(ErasureCodeShec, init_1)
+{
+  //all parameters are normal values
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+
+  int r = shec->init(*profile, &cerr);
+
+  //check profile
+  EXPECT_EQ(4, shec->k);
+  EXPECT_EQ(3, shec->m);
+  EXPECT_EQ(2, shec->c);
+  EXPECT_EQ(8, shec->w);
+  EXPECT_EQ(ErasureCodeShec::MULTIPLE, shec->technique);
+  EXPECT_STREQ("default", shec->rule_root.c_str());
+  EXPECT_STREQ("osd", shec->rule_failure_domain.c_str());
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_2)
+{
+  //all parameters are normal values
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-root"] = "test";
+  (*profile)["crush-failure-domain"] = "host";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  (*profile)["w"] = "8";
+
+  int r = shec->init(*profile, &cerr);
+
+  //check profile
+  EXPECT_EQ(4, shec->k);
+  EXPECT_EQ(3, shec->m);
+  EXPECT_EQ(2, shec->c);
+  EXPECT_EQ(8, shec->w);
+  EXPECT_EQ(ErasureCodeShec::MULTIPLE, shec->technique);
+  EXPECT_STREQ("test", shec->rule_root.c_str());
+  EXPECT_STREQ("host", shec->rule_failure_domain.c_str());
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_3)
+{
+  //all parameters are normal values
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  (*profile)["w"] = "16";
+
+  int r = shec->init(*profile, &cerr);
+
+  //check profile
+  EXPECT_EQ(4, shec->k);
+  EXPECT_EQ(3, shec->m);
+  EXPECT_EQ(2, shec->c);
+  EXPECT_EQ(16, shec->w);
+  EXPECT_EQ(ErasureCodeShec::MULTIPLE, shec->technique);
+  EXPECT_STREQ("default", shec->rule_root.c_str());
+  EXPECT_STREQ("osd", shec->rule_failure_domain.c_str());
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_4)
+{
+  //all parameters are normal values
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  (*profile)["w"] = "32";
+
+  int r = shec->init(*profile, &cerr);
+
+  //check profile
+  EXPECT_EQ(4, shec->k);
+  EXPECT_EQ(3, shec->m);
+  EXPECT_EQ(2, shec->c);
+  EXPECT_EQ(32, shec->w);
+  EXPECT_EQ(ErasureCodeShec::MULTIPLE, shec->technique);
+  EXPECT_STREQ("default", shec->rule_root.c_str());
+  EXPECT_STREQ("osd", shec->rule_failure_domain.c_str());
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_5)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  //plugin is not specified
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_6)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "jerasure";   //unexpected value
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_7)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "abc";        //unexpected value
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_8)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_9)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-root"] = "abc";    //unexpected value
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_10)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "abc";  //unexpected value
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_11)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "abc";             //unexpected value
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_12)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "-1";      //unexpected value
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_13)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "abc";
+  (*profile)["k"] = "0.1";     //unexpected value
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_14)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "a";               //unexpected value
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_15)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  //k is not specified
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_16)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "-1";              //unexpected value
+  (*profile)["c"] = "2";
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_17)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "0.1";             //unexpected value
+  (*profile)["c"] = "2";
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_18)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "a";               //unexpected value
+  (*profile)["c"] = "2";
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_19)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  //m is not specified
+  (*profile)["c"] = "2";
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_20)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "-1";              //unexpected value
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_21)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "0.1";             //unexpected value
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_22)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "a";               //unexpected value
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_23)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  //c is not specified
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_24)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  (*profile)["w"] = "1";               //unexpected value
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(4, shec->k);
+  EXPECT_EQ(3, shec->m);
+  EXPECT_EQ(2, shec->c);
+  EXPECT_EQ(8, shec->w);
+  //w is default value
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_25)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  (*profile)["w"] = "-1";              //unexpected value
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(4, shec->k);
+  EXPECT_EQ(3, shec->m);
+  EXPECT_EQ(2, shec->c);
+  EXPECT_EQ(8, shec->w);
+  //w is default value
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_26)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  (*profile)["w"] = "0.1";             //unexpected value
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(4, shec->k);
+  EXPECT_EQ(3, shec->m);
+  EXPECT_EQ(2, shec->c);
+  EXPECT_EQ(8, shec->w);
+  //w is default value
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_27)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  (*profile)["w"] = "a";               //unexpected value
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(4, shec->k);
+  EXPECT_EQ(3, shec->m);
+  EXPECT_EQ(2, shec->c);
+  EXPECT_EQ(8, shec->w);
+  //w is default value
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_28)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "10";      //c > m
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_29)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  //k is not specified
+  //m is not specified
+  //c is not specified
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  //k,m,c are default values
+  EXPECT_EQ(4, shec->k);
+  EXPECT_EQ(3, shec->m);
+  EXPECT_EQ(2, shec->c);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_30)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "12";
+  (*profile)["m"] = "8";
+  (*profile)["c"] = "8";
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(12, shec->k);
+  EXPECT_EQ(8, shec->m);
+  EXPECT_EQ(8, shec->c);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_31)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "13";
+  (*profile)["m"] = "7";
+  (*profile)["c"] = "7";
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_32)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "7";
+  (*profile)["m"] = "13";
+  (*profile)["c"] = "13";
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_33)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "12";
+  (*profile)["m"] = "9";
+  (*profile)["c"] = "8";
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init_34)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "8";
+  (*profile)["m"] = "12";
+  (*profile)["c"] = "12";
+
+  int r = shec->init(*profile, &cerr);
+
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init2_4)
+{
+  //all parameters are normal values
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+  int r = shec->init(*profile, &cerr); //init executed twice
+
+  //check profile
+  EXPECT_EQ(4, shec->k);
+  EXPECT_EQ(3, shec->m);
+  EXPECT_EQ(2, shec->c);
+  EXPECT_EQ(8, shec->w);
+  EXPECT_EQ(ErasureCodeShec::MULTIPLE, shec->technique);
+  EXPECT_STREQ("default", shec->rule_root.c_str());
+  EXPECT_STREQ("osd", shec->rule_failure_domain.c_str());
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, init2_5)
+{
+  //all parameters are normal values
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  ErasureCodeProfile *profile2 = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "host";
+  (*profile)["k"] = "10";
+  (*profile)["m"] = "6";
+  (*profile)["c"] = "5";
+  (*profile)["w"] = "16";
+
+  int r = shec->init(*profile, &cerr);
+
+  //reexecute init
+  (*profile2)["plugin"] = "shec";
+  (*profile2)["technique"] = "";
+  (*profile2)["crush-failure-domain"] = "osd";
+  (*profile2)["k"] = "4";
+  (*profile2)["m"] = "3";
+  (*profile2)["c"] = "2";
+  shec->init(*profile2, &cerr);
+
+  EXPECT_EQ(4, shec->k);
+  EXPECT_EQ(3, shec->m);
+  EXPECT_EQ(2, shec->c);
+  EXPECT_EQ(8, shec->w);
+  EXPECT_EQ(ErasureCodeShec::MULTIPLE, shec->technique);
+  EXPECT_STREQ("default", shec->rule_root.c_str());
+  EXPECT_STREQ("osd", shec->rule_failure_domain.c_str());
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, minimum_to_decode_8)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //minimum_to_decode
+  set<int> want_to_decode;
+  set<int> available_chunks;
+  set<int> minimum_chunks;
+
+  for (int i = 0; i < 8; ++i) {
+    want_to_decode.insert(i);
+  }
+  for (int i = 0; i < 5; ++i) {
+    available_chunks.insert(i);
+  }
+
+  int r = shec->minimum_to_decode(want_to_decode, available_chunks,
+                                 &minimum_chunks);
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, minimum_to_decode_9)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //minimum_to_decode
+  set<int> want_to_decode;
+  set<int> available_chunks;
+  set<int> minimum_chunks;
+
+  for (int i = 0; i < 4; ++i) {
+    want_to_decode.insert(i);
+  }
+  for (int i = 0; i < 8; ++i) {
+    available_chunks.insert(i);
+  }
+
+  int r = shec->minimum_to_decode(want_to_decode, available_chunks,
+                                 &minimum_chunks);
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, minimum_to_decode_10)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //minimum_to_decode
+  set<int> want_to_decode;
+  set<int> available_chunks;
+  set<int> minimum_chunks;
+
+  for (int i = 0; i < 7; ++i) {
+    want_to_decode.insert(i);
+  }
+  for (int i = 4; i < 7; ++i) {
+    available_chunks.insert(i);
+  }
+
+  int r = shec->minimum_to_decode(want_to_decode, available_chunks,
+                                 &minimum_chunks);
+  EXPECT_EQ(-EIO, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, minimum_to_decode_11)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //minimum_to_decode
+  set<int> want_to_decode;
+  set<int> available_chunks;
+  set<int> minimum_chunks;
+
+  for (int i = 0; i < 5; ++i) {
+    want_to_decode.insert(i);
+  }
+  for (int i = 4; i < 7; ++i) {
+    available_chunks.insert(i);
+  }
+
+  int r = shec->minimum_to_decode(want_to_decode, available_chunks,
+                                 &minimum_chunks);
+  EXPECT_EQ(-EIO, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, minimum_to_decode_12)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //minimum_to_decode
+  set<int> want_to_decode;
+  set<int> available_chunks;
+  //minimum_chunks is NULL
+
+  for (int i = 0; i < 7; ++i) {
+    want_to_decode.insert(i);
+    available_chunks.insert(i);
+  }
+
+  int r = shec->minimum_to_decode(want_to_decode, available_chunks, NULL);
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, minimum_to_decode_13)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //minimum_to_decode
+  set<int> want_to_decode;
+  set<int> available_chunks;
+  set<int> minimum_chunks, minimum;
+
+  for (int i = 0; i < 7; ++i) {
+    want_to_decode.insert(i);
+    available_chunks.insert(i);
+  }
+  shec->minimum_to_decode(want_to_decode, available_chunks, &minimum_chunks);
+  minimum = minimum_chunks;            //normal value
+  for (int i = 100; i < 120; ++i) {
+    minimum_chunks.insert(i);  //insert extra data
+  }
+
+  int r = shec->minimum_to_decode(want_to_decode, available_chunks,
+                                 &minimum_chunks);
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(minimum, minimum_chunks);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, minimum_to_decode2_1)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //minimum_to_decode
+  set<int> want_to_decode;
+  set<int> available_chunks;
+  set<int> minimum_chunks;
+
+  want_to_decode.insert(0);
+  available_chunks.insert(0);
+  available_chunks.insert(1);
+  available_chunks.insert(2);
+
+  int r = shec->minimum_to_decode(want_to_decode, available_chunks,
+                                 &minimum_chunks);
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  EXPECT_TRUE(minimum_chunks.size());
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, minimum_to_decode2_3)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //minimum_to_decode
+  set<int> want_to_decode;
+  set<int> available_chunks;
+  set<int> minimum_chunks;
+
+  want_to_decode.insert(0);
+  want_to_decode.insert(2);
+  available_chunks.insert(0);
+  available_chunks.insert(1);
+  available_chunks.insert(2);
+  available_chunks.insert(3);
+
+  pthread_t tid;
+  g_flag = 0;
+  pthread_create(&tid, NULL, thread1, shec);
+  while (g_flag == 0) {
+    usleep(1);
+  }
+  sleep(1);
+  printf("*** test start ***\n");
+  int r = shec->minimum_to_decode(want_to_decode, available_chunks,
+                                 &minimum_chunks);
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(want_to_decode, minimum_chunks);
+  printf("*** test end ***\n");
+  g_flag = 0;
+  pthread_join(tid, NULL);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, minimum_to_decode_with_cost_1)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //minimum_to_decode_with_cost
+  set<int> want_to_decode;
+  map<int, int> available_chunks;
+  set<int> minimum_chunks;
+
+  for (int i = 0; i < 7; ++i) {
+    want_to_decode.insert(i);
+    available_chunks.insert(make_pair(i, i));
+  }
+
+  int r = shec->minimum_to_decode_with_cost(want_to_decode, available_chunks,
+                                           &minimum_chunks);
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  EXPECT_TRUE(minimum_chunks.size());
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, minimum_to_decode_with_cost_2_3)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //minimum_to_decode_with_cost
+  set<int> want_to_decode;
+  map<int, int> available_chunks;
+  set<int> minimum_chunks;
+
+  want_to_decode.insert(0);
+  want_to_decode.insert(2);
+  available_chunks[0] = 0;
+  available_chunks[1] = 1;
+  available_chunks[2] = 2;
+  available_chunks[3] = 3;
+
+  pthread_t tid;
+  g_flag = 0;
+  pthread_create(&tid, NULL, thread2, shec);
+  while (g_flag == 0) {
+    usleep(1);
+  }
+  sleep(1);
+  printf("*** test start ***\n");
+  int r = shec->minimum_to_decode_with_cost(want_to_decode, available_chunks,
+                                           &minimum_chunks);
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(want_to_decode, minimum_chunks);
+  printf("*** test end ***\n");
+  g_flag = 0;
+  pthread_join(tid, NULL);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, encode_1)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //encode
+  bufferlist in;
+  set<int> want_to_encode;
+  map<int, bufferlist> encoded;
+
+  in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124
+           "0123"//128
+  );
+  for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) {
+    want_to_encode.insert(i);
+  }
+
+  int r = shec->encode(want_to_encode, in, &encoded);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(shec->get_chunk_count(), encoded.size());
+  EXPECT_EQ(shec->get_chunk_size(in.length()), encoded[0].length());
+
+  //decode
+  int want_to_decode[] = { 0, 1, 2, 3, 4, 5, 6 };
+  map<int, bufferlist> decoded;
+  decoded.clear();
+  r = shec->decode(set<int>(want_to_decode, want_to_decode + 2),
+                  encoded,
+                  &decoded);
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(2u, decoded.size());
+  EXPECT_EQ(32u, decoded[0].length());
+
+  bufferlist out1, out2, usable;
+  //out1 is "encoded"
+  for (unsigned int i = 0; i < encoded.size(); ++i) {
+    out1.append(encoded[i]);
+  }
+  //out2 is "decoded"
+  r = shec->decode_concat(encoded, &out2);
+  usable.substr_of(out2, 0, in.length());
+  EXPECT_FALSE(out1 == in);
+  EXPECT_TRUE(usable == in);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, encode_2)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //encode
+  bufferlist in;
+  set<int> want_to_encode;
+  map<int, bufferlist> encoded;
+
+  in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124
+  );
+  for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) {
+    want_to_encode.insert(i);
+  }
+
+  int r = shec->encode(want_to_encode, in, &encoded);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(shec->get_chunk_count(), encoded.size());
+  EXPECT_EQ(shec->get_chunk_size(in.length()), encoded[0].length());
+
+  //decode
+  int want_to_decode[] = { 0, 1, 2, 3, 4, 5, 6 };
+  map<int, bufferlist> decoded;
+  r = shec->decode(set<int>(want_to_decode, want_to_decode + 2), encoded,
+                  &decoded);
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(2u, decoded.size());
+  EXPECT_EQ(32u, decoded[0].length());
+
+  bufferlist out1, out2, usable;
+  //out1 is "encoded"
+  for (unsigned int i = 0; i < encoded.size(); ++i)
+    out1.append(encoded[i]);
+  //out2 is "decoded"
+  shec->decode_concat(encoded, &out2);
+  usable.substr_of(out2, 0, in.length());
+  EXPECT_FALSE(out1 == in);
+  EXPECT_TRUE(usable == in);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, encode_3)
+{
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  bufferlist in;
+  in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124
+  );
+  set<int> want_to_encode;
+  for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) {
+    want_to_encode.insert(i);
+  }
+  want_to_encode.insert(10);
+  want_to_encode.insert(11);
+  map<int, bufferlist> encoded;
+  int r = shec->encode(want_to_encode, in, &encoded);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(shec->get_chunk_count(), encoded.size());
+  EXPECT_EQ(shec->get_chunk_size(in.length()), encoded[0].length());
+
+  //decode
+  int want_to_decode[] = { 0, 1, 2, 3, 4, 5, 6 };
+  map<int, bufferlist> decoded;
+  r = shec->decode(set<int>(want_to_decode, want_to_decode + 2), encoded,
+                  &decoded);
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(2u, decoded.size());
+  EXPECT_EQ(shec->get_chunk_size(in.length()), decoded[0].length());
+
+  bufferlist out1, out2, usable;
+  //out1 is "encoded"
+  for (unsigned int i = 0; i < encoded.size(); ++i) {
+    out1.append(encoded[i]);
+  }
+  //out2 is "decoded"
+  shec->decode_concat(encoded, &out2);
+  usable.substr_of(out2, 0, in.length());
+  EXPECT_FALSE(out1 == in);
+  EXPECT_TRUE(usable == in);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, encode_4)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //encode
+  bufferlist in;
+  set<int> want_to_encode;
+  map<int, bufferlist> encoded;
+
+  in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124
+  );
+  for (unsigned int i = 0; i < shec->get_chunk_count() - 1; ++i) {
+    want_to_encode.insert(i);
+  }
+  want_to_encode.insert(100);
+
+  int r = shec->encode(want_to_encode, in, &encoded);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(shec->get_chunk_count()-1, encoded.size());
+  EXPECT_EQ(shec->get_chunk_size(in.length()), encoded[0].length());
+
+  //decode
+  int want_to_decode[] = { 0, 1, 2, 3, 4, 5, 6 };
+  map<int, bufferlist> decoded;
+  r = shec->decode(set<int>(want_to_decode, want_to_decode + 2), encoded,
+                  &decoded);
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(2u, decoded.size());
+  EXPECT_EQ(shec->get_chunk_size(in.length()), decoded[0].length());
+
+  bufferlist out1, out2, usable;
+  //out1 is "encoded"
+  for (unsigned int i = 0; i < encoded.size(); ++i) {
+    out1.append(encoded[i]);
+  }
+  //out2 is "decoded"
+  shec->decode_concat(encoded, &out2);
+  usable.substr_of(out2, 0, in.length());
+  EXPECT_FALSE(out1 == in);
+  EXPECT_TRUE(usable == in);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, encode_8)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //encode
+  bufferlist in;
+  set<int> want_to_encode;
+
+  in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124
+  );
+  for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) {
+    want_to_encode.insert(i);
+  }
+
+  int r = shec->encode(want_to_encode, in, NULL);      //encoded = NULL
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, encode_9)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //encode
+  bufferlist in;
+  set<int> want_to_encode;
+  map<int, bufferlist> encoded;
+
+  in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124
+  );
+  for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) {
+    want_to_encode.insert(i);
+  }
+  for (int i = 0; i < 100; ++i) {
+    encoded[i].append("ABCDEFGHIJKLMNOPQRSTUVWXYZ");
+  }
+
+  int r = shec->encode(want_to_encode, in, &encoded);
+  EXPECT_EQ(-EINVAL, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, encode2_1)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //encode
+  bufferlist in;
+  set<int> want_to_encode;
+  map<int, bufferlist> encoded;
+
+  in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124
+           "0123"//128
+  );
+  for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) {
+    want_to_encode.insert(i);
+  }
+
+  int r = shec->encode(want_to_encode, in, &encoded);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(shec->get_chunk_count(), encoded.size());
+  EXPECT_EQ(shec->get_chunk_size(in.length()), encoded[0].length());
+
+  //decode
+  int want_to_decode[] = { 0, 1, 2, 3, 4, 5, 6 };
+  map<int, bufferlist> decoded;
+  r = shec->decode(set<int>(want_to_decode, want_to_decode + 2), encoded,
+                  &decoded);
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(2u, decoded.size());
+  EXPECT_EQ(32u, decoded[0].length());
+
+  bufferlist out1, out2, usable;
+  //out1 is "encoded"
+  for (unsigned int i = 0; i < encoded.size(); ++i) {
+    out1.append(encoded[i]);
+  }
+  //out2 is "decoded"
+  shec->decode_concat(encoded, &out2);
+  usable.substr_of(out2, 0, in.length());
+  EXPECT_FALSE(out1 == in);
+  EXPECT_TRUE(usable == in);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, encode2_3)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //encode
+  bufferlist in;
+  set<int> want_to_encode;
+  map<int, bufferlist> encoded;
+
+  in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124
+           "0123"//128
+  );
+  for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) {
+    want_to_encode.insert(i);
+  }
+
+  pthread_t tid;
+  g_flag = 0;
+  pthread_create(&tid, NULL, thread4, shec);
+  while (g_flag == 0) {
+    usleep(1);
+  }
+  sleep(1);
+  printf("*** test start ***\n");
+  int r = shec->encode(want_to_encode, in, &encoded);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(shec->get_chunk_count(), encoded.size());
+  EXPECT_EQ(shec->get_chunk_size(in.length()), encoded[0].length());
+  printf("*** test end ***\n");
+  g_flag = 0;
+  pthread_join(tid, NULL);
+
+  //decode
+  int want_to_decode[] = { 0, 1, 2, 3, 4, 5, 6 };
+  map<int, bufferlist> decoded;
+
+  r = shec->decode(set<int>(want_to_decode, want_to_decode + 2), encoded,
+                  &decoded);
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(2u, decoded.size());
+  EXPECT_EQ(32u, decoded[0].length());
+
+  bufferlist out1, out2, usable;
+  //out1 is "encoded"
+  for (unsigned int i = 0; i < encoded.size(); ++i) {
+    out1.append(encoded[i]);
+  }
+  //out2 is "decoded"
+  shec->decode_concat(encoded, &out2);
+  usable.substr_of(out2, 0, in.length());
+  EXPECT_FALSE(out1 == in);
+  EXPECT_TRUE(usable == in);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, decode_1)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //encode
+  bufferlist in;
+  set<int> want_to_encode;
+  map<int, bufferlist> encoded;
+
+  in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//186
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//248
+  );
+  for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) {
+    want_to_encode.insert(i);
+  }
+
+  int r = shec->encode(want_to_encode, in, &encoded);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(shec->get_chunk_count(), encoded.size());
+  EXPECT_EQ(shec->get_chunk_size(in.length()), encoded[0].length());
+
+  // all chunks are available
+  //decode
+  int want_to_decode[] = { 0, 1, 2, 3, 4, 5, 6 };
+  map<int, bufferlist> decoded;
+
+  r = shec->decode(set<int>(want_to_decode, want_to_decode + 7), encoded,
+                  &decoded);
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(7u, decoded.size());
+
+  bufferlist usable;
+  int cmp;
+  unsigned int c_size = shec->get_chunk_size(in.length());
+  for (unsigned int i = 0; i < shec->get_data_chunk_count(); ++i) {
+    usable.clear();
+    EXPECT_EQ(c_size, decoded[i].length());
+    if ( c_size * (i+1) <= in.length() ) {
+      usable.substr_of(in, c_size * i, c_size);
+      cmp = memcmp(decoded[i].c_str(), usable.c_str(), c_size);
+    } else {
+      usable.substr_of(in, c_size * i, in.length() % c_size);
+      cmp = memcmp(decoded[i].c_str(), usable.c_str(), in.length() % c_size);
+    }
+    EXPECT_EQ(0, cmp);
+  }
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, decode_8)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //encode
+  bufferlist in;
+  set<int> want_to_encode;
+  map<int, bufferlist> encoded;
+
+  in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//186
+            "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//248
+  );
+  for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) {
+    want_to_encode.insert(i);
+  }
+
+  int r = shec->encode(want_to_encode, in, &encoded);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(shec->get_chunk_count(), encoded.size());
+  EXPECT_EQ(shec->get_chunk_size(in.length()), encoded[0].length());
+
+  // all chunks are available
+  //decode
+  int want_to_decode[] = { 0, 1, 2, 3, 4, 5, 6, 7 }; //more than k+m
+  map<int, bufferlist> decoded;
+
+  r = shec->decode(set<int>(want_to_decode, want_to_decode + 8), encoded,
+                  &decoded);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(7u, decoded.size());
+  EXPECT_EQ(shec->get_chunk_size(in.length()), encoded[0].length());
+
+  bufferlist usable;
+  int cmp;
+  unsigned int c_size = shec->get_chunk_size(in.length());
+  for (unsigned int i = 0; i < shec->get_data_chunk_count(); ++i) {
+    usable.clear();
+    EXPECT_EQ(c_size, decoded[i].length());
+    if ( c_size * (i+1) <= in.length() ) {
+      usable.substr_of(in, c_size * i, c_size);
+      cmp = memcmp(decoded[i].c_str(), usable.c_str(), c_size);
+    } else {
+      usable.substr_of(in, c_size * i, in.length() % c_size);
+      cmp = memcmp(decoded[i].c_str(), usable.c_str(), in.length() % c_size);
+    }
+    EXPECT_EQ(0, cmp);
+  }
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, decode_9)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //encode
+  bufferlist in;
+  set<int> want_to_encode;
+  map<int, bufferlist> encoded;
+
+  in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//186
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//248
+  );
+  for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) {
+    want_to_encode.insert(i);
+  }
+
+  int r = shec->encode(want_to_encode, in, &encoded);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(shec->get_chunk_count(), encoded.size());
+  EXPECT_EQ(shec->get_chunk_size(in.length()), encoded[0].length());
+
+  // all chunks are available
+  //decode
+  int want_to_decode[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+  map<int, bufferlist> decoded;
+
+  //extra data
+  bufferlist buf;
+  buf.append("abc");
+  encoded[100] = buf;
+
+  r = shec->decode(set<int>(want_to_decode, want_to_decode + 10), encoded,
+                  &decoded);
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(7u, decoded.size());
+  EXPECT_EQ(shec->get_chunk_size(in.length()), decoded[0].length());
+
+  bufferlist out1, usable;
+  //out1 is "encoded"
+  for (unsigned int i = 0; i < encoded.size(); ++i) {
+    out1.append(encoded[i]);
+  }
+  EXPECT_FALSE(out1 == in);
+  //usable is "decoded"
+  int cmp;
+  unsigned int c_size = shec->get_chunk_size(in.length());
+  for (unsigned int i = 0; i < shec->get_data_chunk_count(); ++i) {
+    usable.clear();
+    EXPECT_EQ(c_size, decoded[i].length());
+    if ( c_size * (i+1) <= in.length() ) {
+      usable.substr_of(in, c_size * i, c_size);
+      cmp = memcmp(decoded[i].c_str(), usable.c_str(), c_size);
+    } else {
+      usable.substr_of(in, c_size * i, in.length() % c_size);
+      cmp = memcmp(decoded[i].c_str(), usable.c_str(), in.length() % c_size);
+    }
+    EXPECT_EQ(0, cmp);
+  }
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, decode_10)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //encode
+  bufferlist in;
+  set<int> want_to_encode;
+  map<int, bufferlist> encoded;
+
+  in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//186
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//248
+  );
+  for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) {
+    want_to_encode.insert(i);
+  }
+
+  int r = shec->encode(want_to_encode, in, &encoded);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(shec->get_chunk_count(), encoded.size());
+  EXPECT_EQ(shec->get_chunk_size(in.length()), encoded[0].length());
+
+  //decode
+  int want_to_decode[] = { 0, 1, 2, 3, 4, 5, 6 }; //more than k+m
+  map<int, bufferlist> decoded, inchunks;
+
+  for ( unsigned int i = 0; i < 3; ++i) {
+    inchunks.insert(make_pair(i, encoded[i]));
+  }
+
+  r = shec->decode(set<int>(want_to_decode, want_to_decode + 7), inchunks,
+                  &decoded);
+  EXPECT_EQ(-1, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, decode_11)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //encode
+  bufferlist in;
+  set<int> want_to_encode;
+  map<int, bufferlist> encoded;
+
+  in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124
+           "ABCD"//128
+  );
+  for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) {
+    want_to_encode.insert(i);
+  }
+
+  int r = shec->encode(want_to_encode, in, &encoded);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(shec->get_chunk_count(), encoded.size());
+  EXPECT_EQ(shec->get_chunk_size(in.length()), encoded[0].length());
+
+  //decode
+  int want_to_decode[] = { 0, 1, 2, 3, 4 };
+  map<int, bufferlist> decoded, inchunks;
+
+  for ( unsigned int i = 4; i < 7; ++i) {
+    inchunks.insert(make_pair(i, encoded[i]));
+  }
+
+  r = shec->decode(set<int>(want_to_decode, want_to_decode + 5), inchunks,
+                  &decoded);
+  EXPECT_EQ(-1, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, decode_12)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //encode
+  bufferlist in;
+  set<int> want_to_encode;
+  map<int, bufferlist> encoded;
+
+  in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//186
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//248
+  );
+  for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) {
+    want_to_encode.insert(i);
+  }
+
+  int r = shec->encode(want_to_encode, in, &encoded);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(shec->get_chunk_count(), encoded.size());
+  EXPECT_EQ(shec->get_chunk_size(in.length()), encoded[0].length());
+
+  // all chunks are available
+  //decode
+  int want_to_decode[] = { 0, 1, 2, 3, 4, 5, 6 };
+
+  //decoded = NULL
+  r = shec->decode(set<int>(want_to_decode, want_to_decode + 7), encoded,
+                  NULL);
+  EXPECT_NE(0, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, decode_13)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //encode
+  bufferlist in;
+  set<int> want_to_encode;
+  map<int, bufferlist> encoded;
+
+  in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//186
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//248
+  );
+  for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) {
+    want_to_encode.insert(i);
+  }
+
+  int r = shec->encode(want_to_encode, in, &encoded);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(shec->get_chunk_count(), encoded.size());
+  EXPECT_EQ(shec->get_chunk_size(in.length()), encoded[0].length());
+
+  // all chunks are available
+  //decode
+  int want_to_decode[] = { 0, 1, 2, 3, 4, 5, 6 };
+  map<int, bufferlist> decoded;
+
+  //extra data
+  bufferlist buf;
+  buf.append("a");
+  for (int i = 0; i < 100; ++i) {
+    decoded[i] = buf;
+  }
+
+  r = shec->decode(set<int>(want_to_decode, want_to_decode + 7), encoded,
+                  &decoded);
+  EXPECT_NE(0, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, decode2_1)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //encode
+  bufferlist in;
+  set<int> want_to_encode;
+  map<int, bufferlist> encoded;
+
+  in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//186
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//248
+  );
+  for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) {
+    want_to_encode.insert(i);
+  }
+
+  int r = shec->encode(want_to_encode, in, &encoded);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(shec->get_chunk_count(), encoded.size());
+  EXPECT_EQ(shec->get_chunk_size(in.length()), encoded[0].length());
+
+  // all chunks are available
+  //decode
+  int want_to_decode[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+  map<int, bufferlist> decoded;
+
+  r = shec->decode(set<int>(want_to_decode, want_to_decode + 2), encoded,
+                  &decoded);
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(2u, decoded.size());
+
+  bufferlist out;
+  shec->decode_concat(encoded, &out);
+  bufferlist usable;
+  usable.substr_of(out, 0, in.length());
+  EXPECT_TRUE(usable == in);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, decode2_3)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //encode
+  bufferlist in;
+  set<int> want_to_encode;
+  map<int, bufferlist> encoded;
+
+  in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//186
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//248
+  );
+  for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) {
+    want_to_encode.insert(i);
+  }
+
+  int r = shec->encode(want_to_encode, in, &encoded);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(shec->get_chunk_count(), encoded.size());
+  EXPECT_EQ(shec->get_chunk_size(in.length()), encoded[0].length());
+
+  // all chunks are available
+  //decode
+  int want_to_decode[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+  map<int, bufferlist> decoded;
+
+  pthread_t tid;
+  g_flag = 0;
+  pthread_create(&tid, NULL, thread4, shec);
+  while (g_flag == 0) {
+    usleep(1);
+  }
+  sleep(1);
+  printf("*** test start ***\n");
+  r = shec->decode(set<int>(want_to_decode, want_to_decode + 2), encoded,
+                  &decoded);
+  EXPECT_TRUE(shec->matrix != NULL);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(2u, decoded.size());
+  printf("*** test end ***\n");
+  g_flag = 0;
+  pthread_join(tid, NULL);
+
+  bufferlist out;
+  shec->decode_concat(encoded, &out);
+  bufferlist usable;
+  usable.substr_of(out, 0, in.length());
+  EXPECT_TRUE(usable == in);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, decode2_4)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //encode
+  bufferlist in;
+  set<int> want_to_encode;
+  map<int, bufferlist> encoded;
+
+  in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//186
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//248
+  );
+  for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) {
+    want_to_encode.insert(i);
+  }
+
+  int r = shec->encode(want_to_encode, in, &encoded);
+  EXPECT_EQ(0, r);
+  EXPECT_EQ(shec->get_chunk_count(), encoded.size());
+  EXPECT_EQ(shec->get_chunk_size(in.length()), encoded[0].length());
+
+  //decode
+  int want_to_decode[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+  map<int, bufferlist> decoded;
+
+  // cannot recover
+  bufferlist out;
+  map<int, bufferlist> degraded;
+  degraded[0] = encoded[0];
+
+  r = shec->decode(set<int>(want_to_decode, want_to_decode + 2), degraded,
+                  &decoded);
+  EXPECT_EQ(-1, r);
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, create_rule_1_2)
+{
+  //create ruleset
+  CrushWrapper *crush = new CrushWrapper;
+  crush->create();
+  crush->set_type_name(2, "root");
+  crush->set_type_name(1, "host");
+  crush->set_type_name(0, "osd");
+
+  int rootno;
+  crush->add_bucket(0, CRUSH_BUCKET_STRAW, CRUSH_HASH_RJENKINS1, 2, 0, NULL,
+                   NULL, &rootno);
+  crush->set_item_name(rootno, "default");
+
+  map < string, string > loc;
+  loc["root"] = "default";
+
+  int num_host = 2;
+  int num_osd = 5;
+  int osd = 0;
+  for (int h = 0; h < num_host; ++h) {
+    loc["host"] = string("host-") + stringify(h);
+    for (int o = 0; o < num_osd; ++o, ++osd) {
+      crush->insert_item(g_ceph_context, osd, 1.0,
+                        string("osd.") + stringify(osd), loc);
+    }
+  }
+
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //create_rule
+  stringstream ss;
+
+  int r = shec->create_rule("myrule", *crush, &ss);
+  EXPECT_EQ(0, r);
+  EXPECT_STREQ("myrule", crush->rule_name_map[0].c_str());
+
+  //reexecute create_rule
+  r = shec->create_rule("myrule", *crush, &ss);
+  EXPECT_EQ(-EEXIST, r);
+
+  delete shec;
+  delete profile;
+  delete crush;
+}
+
+TEST(ErasureCodeShec, create_rule_4)
+{
+  //create ruleset
+  CrushWrapper *crush = new CrushWrapper;
+  crush->create();
+  crush->set_type_name(2, "root");
+  crush->set_type_name(1, "host");
+  crush->set_type_name(0, "osd");
+
+  int rootno;
+  crush->add_bucket(0, CRUSH_BUCKET_STRAW, CRUSH_HASH_RJENKINS1, 2, 0, NULL,
+                   NULL, &rootno);
+  crush->set_item_name(rootno, "default");
+
+  map < string, string > loc;
+  loc["root"] = "default";
+
+  int num_host = 2;
+  int num_osd = 5;
+  int osd = 0;
+  for (int h = 0; h < num_host; ++h) {
+    loc["host"] = string("host-") + stringify(h);
+    for (int o = 0; o < num_osd; ++o, ++osd) {
+      crush->insert_item(g_ceph_context, osd, 1.0,
+                        string("osd.") + stringify(osd), loc);
+    }
+  }
+
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //create_rule
+  int r = shec->create_rule("myrule", *crush, NULL);   //ss = NULL
+  EXPECT_EQ(0, r);
+
+  delete shec;
+  delete profile;
+  delete crush;
+}
+
+TEST(ErasureCodeShec, create_rule2_1)
+{
+  //create ruleset
+  CrushWrapper *crush = new CrushWrapper;
+  crush->create();
+  crush->set_type_name(2, "root");
+  crush->set_type_name(1, "host");
+  crush->set_type_name(0, "osd");
+
+  int rootno;
+  crush->add_bucket(0, CRUSH_BUCKET_STRAW, CRUSH_HASH_RJENKINS1, 2, 0, NULL,
+                   NULL, &rootno);
+  crush->set_item_name(rootno, "default");
+
+  map < string, string > loc;
+  loc["root"] = "default";
+
+  int num_host = 2;
+  int num_osd = 5;
+  int osd = 0;
+  for (int h = 0; h < num_host; ++h) {
+    loc["host"] = string("host-") + stringify(h);
+    for (int o = 0; o < num_osd; ++o, ++osd) {
+      crush->insert_item(g_ceph_context, osd, 1.0,
+                        string("osd.") + stringify(osd), loc);
+    }
+  }
+
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //create_rule
+  stringstream ss;
+
+  int r = shec->create_rule("myrule", *crush, &ss);
+  EXPECT_EQ(0, r);
+  EXPECT_STREQ("myrule", crush->rule_name_map[0].c_str());
+
+  delete shec;
+  delete profile;
+  delete crush;
+}
+
+struct CreateRuleset2_3_Param_d {
+  ErasureCodeShec *shec;
+  CrushWrapper *crush;
+};
+
+TEST(ErasureCodeShec, create_rule2_3)
+{
+  //create ruleset
+  CrushWrapper *crush = new CrushWrapper;
+  crush->create();
+  crush->set_type_name(2, "root");
+  crush->set_type_name(1, "host");
+  crush->set_type_name(0, "osd");
+
+  int rootno;
+  crush->add_bucket(0, CRUSH_BUCKET_STRAW, CRUSH_HASH_RJENKINS1, 2, 0, NULL,
+                   NULL, &rootno);
+  crush->set_item_name(rootno, "default");
+
+  map < string, string > loc;
+  loc["root"] = "default";
+
+  int num_host = 2;
+  int num_osd = 5;
+  int osd = 0;
+  for (int h = 0; h < num_host; ++h) {
+    loc["host"] = string("host-") + stringify(h);
+    for (int o = 0; o < num_osd; ++o, ++osd) {
+      crush->insert_item(g_ceph_context, osd, 1.0,
+                        string("osd.") + stringify(osd), loc);
+    }
+  }
+
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //create_rule
+  stringstream ss;
+
+  pthread_t tid;
+  g_flag = 0;
+  pthread_create(&tid, NULL, thread3, shec);
+  while (g_flag == 0) {
+    usleep(1);
+  }
+  sleep(1);
+  printf("*** test start ***\n");
+  int r = (shec->create_rule("myrule", *crush, &ss));
+  EXPECT_TRUE(r >= 0);
+  printf("*** test end ***\n");
+  g_flag = 0;
+  pthread_join(tid, NULL);
+
+  delete shec;
+  delete profile;
+  delete crush;
+}
+
+TEST(ErasureCodeShec, get_chunk_count_1)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //get_chunk_count
+  EXPECT_EQ(7u, shec->get_chunk_count());
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, get_data_chunk_count_1)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  shec->init(*profile, &cerr);
+
+  //get_data_chunk_count
+  EXPECT_EQ(4u, shec->get_data_chunk_count());
+
+  delete shec;
+  delete profile;
+}
+
+TEST(ErasureCodeShec, get_chunk_size_1_2)
+{
+  //init
+  ErasureCodeShecTableCache tcache;
+  ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde(
+                                 tcache,
+                                 ErasureCodeShec::MULTIPLE);
+  ErasureCodeProfile *profile = new ErasureCodeProfile();
+  (*profile)["plugin"] = "shec";
+  (*profile)["technique"] = "";
+  (*profile)["crush-failure-domain"] = "osd";
+  (*profile)["k"] = "4";
+  (*profile)["m"] = "3";
+  (*profile)["c"] = "2";
+  (*profile)["w"] = "8";
+  shec->init(*profile, &cerr);
+
+  //when there is no padding(128=k*w*4)
+  EXPECT_EQ(32u, shec->get_chunk_size(128));
+  //when there is padding(126=k*w*4-2)
+  EXPECT_EQ(32u, shec->get_chunk_size(126));
+
+  delete shec;
+  delete profile;
+}
+
+void* thread1(void* pParam)
+{
+  ErasureCodeShec* shec = (ErasureCodeShec*) pParam;
+  set<int> want_to_decode;
+  set<int> available_chunks;
+  set<int> minimum_chunks;
+
+  want_to_decode.insert(0);
+  want_to_decode.insert(1);
+  available_chunks.insert(0);
+  available_chunks.insert(1);
+  available_chunks.insert(2);
+
+  printf("*** thread loop start ***\n");
+  g_flag = 1;
+  while (g_flag == 1) {
+    shec->minimum_to_decode(want_to_decode, available_chunks, &minimum_chunks);
+  }
+  printf("*** thread loop end ***\n");
+
+  return NULL;
+}
+
+void* thread2(void* pParam)
+{
+  ErasureCodeShec* shec = (ErasureCodeShec*) pParam;
+  set<int> want_to_decode;
+  map<int, int> available_chunks;
+  set<int> minimum_chunks;
+
+  want_to_decode.insert(0);
+  want_to_decode.insert(1);
+  available_chunks[0] = 0;
+  available_chunks[1] = 1;
+  available_chunks[2] = 2;
+
+  printf("*** thread loop start ***\n");
+  g_flag = 1;
+  while (g_flag == 1) {
+    shec->minimum_to_decode_with_cost(want_to_decode, available_chunks,
+                                     &minimum_chunks);
+    minimum_chunks.clear();
+  }
+  printf("*** thread loop end ***\n");
+
+  return NULL;
+}
+
+void* thread3(void* pParam)
+{
+  ErasureCodeShec* shec = (ErasureCodeShec*) pParam;
+
+  CrushWrapper *crush = new CrushWrapper;
+  crush->create();
+  crush->set_type_name(2, "root");
+  crush->set_type_name(1, "host");
+  crush->set_type_name(0, "osd");
+
+  int rootno;
+  crush->add_bucket(0, CRUSH_BUCKET_STRAW, CRUSH_HASH_RJENKINS1, 2, 0, NULL,
+                   NULL, &rootno);
+  crush->set_item_name(rootno, "default");
+
+  map < string, string > loc;
+  loc["root"] = "default";
+
+  int num_host = 2;
+  int num_osd = 5;
+  int osd = 0;
+  for (int h = 0; h < num_host; ++h) {
+    loc["host"] = string("host-") + stringify(h);
+    for (int o = 0; o < num_osd; ++o, ++osd) {
+      crush->insert_item(g_ceph_context, osd, 1.0,
+                        string("osd.") + stringify(osd), loc);
+    }
+  }
+
+  stringstream ss;
+  int i = 0;
+  char name[30];
+
+  printf("*** thread loop start ***\n");
+  g_flag = 1;
+  while (g_flag == 1) {
+    sprintf(name, "myrule%d", i);
+    shec->create_rule(name, *crush, &ss);
+    ++i;
+  }
+  printf("*** thread loop end ***\n");
+
+  return NULL;
+}
+
+void* thread4(void* pParam)
+{
+  ErasureCodeShec* shec = (ErasureCodeShec*) pParam;
+
+  bufferlist in;
+  in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//186
+           "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//248
+  );
+  set<int> want_to_encode;
+  for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) {
+    want_to_encode.insert(i);
+  }
+
+  map<int, bufferlist> encoded;
+
+  printf("*** thread loop start ***\n");
+  g_flag = 1;
+  while (g_flag == 1) {
+    shec->encode(want_to_encode, in, &encoded);
+    encoded.clear();
+  }
+  printf("*** thread loop end ***\n");
+
+  return NULL;
+}
+
+void* thread5(void* pParam)
+{
+  ErasureCodeShec* shec = (ErasureCodeShec*) pParam;
+
+  bufferlist in;
+  in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62
+         "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124
+         "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//186
+         "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//248
+         "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//310
+  );
+  set<int> want_to_encode;
+  for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) {
+    want_to_encode.insert(i);
+  }
+  map<int, bufferlist> encoded;
+  shec->encode(want_to_encode, in, &encoded);
+
+  int want_to_decode[] = { 0, 1, 2, 3, 4, 5 };
+  map<int, bufferlist> decoded;
+
+  printf("*** thread loop start ***\n");
+  g_flag = 1;
+  while (g_flag == 1) {
+    shec->decode(set<int>(want_to_decode, want_to_decode + 2), encoded,
+                &decoded);
+    decoded.clear();
+  }
+  printf("*** thread loop end ***\n");
+
+  return NULL;
+}