Fix data-race between flush() and startup() in StorageBuffer #29930
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robot-clickhouse
added
pr-bugfix
Stress tests found [1], TSan report:
==================
WARNING: ThreadSanitizer: data race (pid=485)
Read of size 8 at 0x7b5001280bd8 by thread T567 (mutexes: write M612061890855345680):
1 std::__1::shared_ptr<DB::BackgroundSchedulePoolTaskInfo>::operator bool() const obj-x86_64-linux-gnu/../contrib/libcxx/include/memory:2851:62 (clickhouse+0x159140a6)
2 bool std::__1::operator!=<DB::BackgroundSchedulePoolTaskInfo>() obj-x86_64-linux-gnu/../contrib/libcxx/include/memory:3447:30 (clickhouse+0x159140a6)
3 DB::BackgroundSchedulePoolTaskHolder::operator bool() const obj-x86_64-linux-gnu/../src/Core/BackgroundSchedulePool.h:164:46 (clickhouse+0x159140a6)
4 DB::StorageBuffer::flush() obj-x86_64-linux-gnu/../src/Storages/StorageBuffer.cpp:675:10 (clickhouse+0x159140a6)
Previous write of size 8 at 0x7b5001280bd8 by thread T586 (mutexes: write M191819750614415520):
2 std::__1::shared_ptr<DB::BackgroundSchedulePoolTaskInfo>::operator=(std::__1::shared_ptr<DB::BackgroundSchedulePoolTaskInfo>&&) obj-x86_64-linux-gnu/../contrib/libcxx/include/memory:3243:34 (clickhouse+0x15913e22)
3 DB::BackgroundSchedulePoolTaskHolder::operator=() obj-x86_64-linux-gnu/../src/Core/BackgroundSchedulePool.h:156:110 (clickhouse+0x15913e22)
4 DB::StorageBuffer::startup() obj-x86_64-linux-gnu/../src/Storages/StorageBuffer.cpp:668:18 (clickhouse+0x15913e22)
5 DB::InterpreterCreateQuery::doCreateTable() obj-x86_64-linux-gnu/../src/Interpreters/InterpreterCreateQuery.cpp:1092:10 (clickhouse+0x149bef7b)
6 DB::InterpreterCreateQuery::createTable() obj-x86_64-linux-gnu/../src/Interpreters/InterpreterCreateQuery.cpp:952:20 (clickhouse+0x149ba9f5)
7 DB::InterpreterCreateQuery::execute() obj-x86_64-linux-gnu/../src/Interpreters/InterpreterCreateQuery.cpp:1302:16 (clickhouse+0x149c1086)
[1]: https://clickhouse-test-reports.s3.yandex.net/0/1c9778603ff49563d1d3d0d357de0608167e504d/stress_test_(thread).html
Fixes: ClickHouse#29416
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Changelog category (leave one):
Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):
Fix data-race between flush() and startup() in StorageBuffer
Detailed description / Documentation draft:
Stress tests found 1, TSan report:
Fixes: #29416