F0613 10:11:38.864806 2310 db_lmdb.hpp:15] Check failed: mdb_status == 0 (-30782 vs. 0) MDB_BAD_TXN

[zgq_00...@163.com]

when i run make runtest,i get this error:

[----------] 5 tests from DBTest/1, where TypeParam = caffe::TypeLMDB
[ RUN      ] DBTest/1.TestNext
[       OK ] DBTest/1.TestNext (167 ms)
[ RUN      ] DBTest/1.TestKeyValue
[       OK ] DBTest/1.TestKeyValue (84 ms)
[ RUN      ] DBTest/1.TestGetDB
[       OK ] DBTest/1.TestGetDB (95 ms)
[ RUN      ] DBTest/1.TestWrite
F0613 10:11:38.864806  2310 db_lmdb.hpp:15] Check failed: mdb_status == 0 (-30782 vs. 0) MDB_BAD_TXN: Transaction cannot recover - it must be aborted
*** Check failure stack trace: ***
    @     0x7f8ac6aa740d  google::LogMessage::Fail()
    @     0x7f8ac6aa92cf  google::LogMessage::SendToLog()
    @     0x7f8ac6aa6fa3  google::LogMessage::Flush()
    @     0x7f8ac6aa9bee  google::LogMessageFatal::~LogMessageFatal()
    @     0x7f8ac77e1877  caffe::db::LMDBTransaction::Commit()
    @     0x7f8ac77e1746  caffe::db::LMDBTransaction::Commit()
    @           0x9e829b  caffe::DBTest_TestWrite_Test<>::TestBody()
    @           0xd58883  testing::internal::HandleExceptionsInMethodIfSupported<>()
    @           0xd50687  testing::Test::Run()
    @           0xd5072e  testing::TestInfo::Run()
    @           0xd50835  testing::TestCase::Run()
    @           0xd52ac8  testing::internal::UnitTestImpl::RunAllTests()
    @           0xd52d57  testing::UnitTest::Run()
    @           0x8d25cf  main
    @     0x7f8ab575cb05  __libc_start_main
    @           0x8d9b39  (unknown)