[jira] [Created] (KUDU-2388) TSAN race in MaintenanceManager::UnregisterOp

["Todd Lipcon (JIRA)" <ji...@apache.org>]

Todd Lipcon created KUDU-2388:
---------------------------------

             Summary: TSAN race in MaintenanceManager::UnregisterOp
                 Key: KUDU-2388
                 URL: https://issues.apache.org/jira/browse/KUDU-2388
             Project: Kudu
          Issue Type: Bug
          Components: tserver
            Reporter: Todd Lipcon


Saw a flaky failure of TabletReplacementITest.TestMasterTombstoneOldReplicaOnReport with the following TSAN race:
{code}
WARNING: ThreadSanitizer: data race (pid=17822)  Read of size 1 at 0x7b4c000054e8 by thread T59 (mutexes: write M1750):
...
    #3 strings::internal::SubstituteArg::SubstituteArg(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) /data/somelongdirectorytoavoidrpathissues/src/kudu/src/kudu/gutil/strings/substitute.h:76 (libtserver.so+0x9edb0)
    #4 kudu::MaintenanceManager::LogPrefix() const /data/somelongdirectorytoavoidrpathissues/src/kudu/src/kudu/util/maintenance_manager.cc:545:31 (libkudu_util.so+0x167791)
    #5 kudu::MaintenanceManager::UnregisterOp(kudu::MaintenanceOp*) /data/somelongdirectorytoavoidrpathissues/src/kudu/src/kudu/util/maintenance_manager.cc:235:3 (libkudu_util.so+0x165963)
    #6 kudu::MaintenanceOp::Unregister() /data/somelongdirectorytoavoidrpathissues/src/kudu/src/kudu/util/maintenance_manager.cc:123:13 (libkudu_util.so+0x1654fe)
    #7 kudu::tablet::Tablet::UnregisterMaintenanceOps() /data/somelongdirectorytoavoidrpathissues/src/kudu/src/kudu/tablet/tablet.cc:1405:9 (libtablet.so+0xfb5af)
    #8 kudu::tablet::TabletReplica::Stop() /data/somelongdirectorytoavoidrpathissues/src/kudu/src/kudu/tablet/tablet_replica.cc:271:25 (libtablet.so+0x146e66)
    #9 kudu::tserver::TSTabletManager::DeleteTablet(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, kudu::tablet::TabletDataState, boost::optional<long> const&, kudu::tserver::TabletServerErrorPB_Code*) /data/somelongdirectorytoavoidrpathissues/src/kudu/src/kudu/tserver/ts_tablet_manager.cc:830:12 (libtserver.so+0x106d62)

  Previous write of size 8 at 0x7b4c000054e8 by main thread:
    #0 memcpy /data/somelongdirectorytoavoidrpathissues/src/kudu/thirdparty/src/llvm-4.0.0.src/projects/compiler-rt/lib/tsan/../sanitizer_common/sanitizer_common_interceptors.inc:655 (kudu-tserver+0x449e4c)
    #1 std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::__move_assign(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >&, std::__1::integral_constant<bool, true>) /data/somelongdirectorytoavoidrpathissues/src/kudu/thirdparty/installed/tsan/include/c++/v1/string:2044:18 (libkudu_util.so+0x16664d)
    #2 std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::operator=(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >&&) /data/somelongdirectorytoavoidrpathissues/src/kudu/thirdparty/installed/tsan/include/c++/v1/string:2055 (libkudu_util.so+0x16664d)
    #3 kudu::MaintenanceManager::Init(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >) /data/somelongdirectorytoavoidrpathissues/src/kudu/src/kudu/util/maintenance_manager.cc:169 (libkudu_util.so+0x16664d)
...

  Location is heap block of size 416 at 0x7b4c00005400 allocated by main thread:
    #0 operator new(unsigned long) /data/somelongdirectorytoavoidrpathissues/src/kudu/thirdparty/src/llvm-4.0.0.src/projects/compiler-rt/lib/tsan/rtl/tsan_new_delete.cc:41 (kudu-tserver+0x4c1163)
    #1 kudu::tserver::TabletServer::TabletServer(kudu::tserver::TabletServerOptions const&) /data/somelongdirectorytoavoidrpathissues/src/kudu/src/kudu/tserver/tablet_server.cc:60:26 (libtserver.so+0xda8ff)
    #2 kudu::tserver::TabletServerMain(int, char**) /data/somelongdirectorytoavoidrpathissues/src/kudu/src/kudu/tserver/tablet_server_main.cc:78:16 (kudu-tserver+0x4c3ab3)
    #3 main /data/somelongdirectorytoavoidrpathissues/src/kudu/src/kudu/tserver/tablet_server_main.cc:99:10 (kudu-tserver+0x4c37ee)
{code}




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