Backport: Fix an race condition during multiple DB opening (#8574)#13
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azat merged 1 commit intoClickHouse:masterfrom Sep 26, 2021
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Summary: ObjectLibrary is shared between multiple DB instances, the Register() could have race condition. Pull Request resolved: facebook#8574 Test Plan: pass the failed test Reviewed By: ajkr Differential Revision: D29855096 Pulled By: jay-zhuang fbshipit-source-id: 541eed0bd495d2c963d858d81e7eabf1ba16153c (cherry picked from commit c4a503f)
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This should fix the following SIGSEGV, that was found on CI [1]:
<Fatal> BaseDaemon: Address: NULL pointer. Access: read. Unknown si_code.
<Fatal> BaseDaemon: 4.4. inlined from ../contrib/rocksdb/utilities/object_registry.cc:19: rocksdb::ObjectLibrary::FindEntry() const
...
<Fatal> BaseDaemon: 7.3. inlined from ../contrib/rocksdb/options/cf_options.cc:678: rocksdb::$_7::operator()()
[1]: https://clickhouse-test-reports.s3.yandex.net/29341/2b2bec3679df7965af908ce3f1e8e17e39bd12fe/integration_tests_flaky_check_(asan).html#fail1
And also I checked manually with TSan binary, and here is a data race
reported by TSan:
WARNING: ThreadSanitizer: data race (pid=3356)
Read of size 8 at 0x7b0c0008cca8 by thread T40:
2 rocksdb::ObjectLibrary::FindEntry() const obj-x86_64-linux-gnu/../contrib/rocksdb/utilities/object_registry.cc:18:27 (clickhouse-tsan+0x1b839a6c)
...
6 rocksdb::$_7::operator()() const obj-x86_64-linux-gnu/../contrib/rocksdb/options/cf_options.cc:676:32 (clickhouse-tsan+0x1b6bfa63)
...
28 rocksdb::GetColumnFamilyOptionsFromMap() obj-x86_64-linux-gnu/../contrib/rocksdb/options/options_helper.cc:727:10 (clickhouse-tsan+0x1b6fffd2)
29 DB::StorageEmbeddedRocksDB::initDb() obj-x86_64-linux-gnu/../src/Storages/RocksDB/StorageEmbeddedRocksDB.cpp:359:26 (clickhouse-tsan+0x14195e31)
...
Previous write of size 8 at 0x7b0c0008cca8 by thread T41:
...
9 rocksdb::ObjectLibrary::AddEntry() obj-x86_64-linux-gnu/../contrib/rocksdb/utilities/object_registry.cc:31:19 (clickhouse-tsan+0x1b8392fc)
...
11 rocksdb::RegisterTableFactories()::$_0::operator()() const obj-x86_64-linux-gnu/../contrib/rocksdb/table/table_factory.cc:23:14 (clickhouse-tsan+0x1b7ea94c)
...
43 rocksdb::GetColumnFamilyOptionsFromMap() obj-x86_64-linux-gnu/../contrib/rocksdb/options/options_helper.cc:727:10 (clickhouse-tsan+0x1b6fffd2)
44 DB::StorageEmbeddedRocksDB::initDb() obj-x86_64-linux-gnu/../src/Storages/RocksDB/StorageEmbeddedRocksDB.cpp:359:26 (clickhouse-tsan+0x14195e31)
Refs: ClickHouse/rocksdb#13
Fixes: ClickHouse#29341
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Summary:
ObjectLibrary is shared between multiple DB instances, the
Register() could have race condition.
Pull Request resolved: facebook#8574
Test Plan: pass the failed test
Reviewed By: ajkr
Differential Revision: D29855096
Pulled By: jay-zhuang
fbshipit-source-id: 541eed0bd495d2c963d858d81e7eabf1ba16153c
(cherry picked from commit c4a503f)