Info
The FutureResolution mutex is marked level 0. So is the SessionCatalog mutex. This is a problem because while the SessionCatalog mutex is held, we call OperationContext::markKilled, which then resolves a future which requires acquiring the FutureResolution mutex. This is only a problem in tests since there's no actual risk for deadlock - it's just reported as a level violation by the latch analyzer.
To fix it we need to either make the SessionCatalog mutex level 1, or make the FutureResolution into a std::mutex with no leveling since it's such a low level component.
Acceptance criteria:
Remove the hierarchy number from the FutureResolution mutex
Top User Comments
xgen-internal-githook commented on Sun, 16 May 2021 15:30:34 +0000:
Author:
{'name': 'Benety Goh', 'email': 'benety@mongodb.com', 'username': 'benety'}
Message: SERVER-53661 re-enable disable index_commit_currentop_slow.js
This reverts commit beb176da79f83da393da9416b3552d00f4ff50c9.
Branch: master
https://github.com/mongodb/mongo/commit/f856bd9d8ea972ffa55e4762b8164fa2145e8bdb
xgen-internal-githook commented on Sun, 16 May 2021 10:23:31 +0000:
Author:
{'name': 'Benety Goh', 'email': 'benety@mongodb.com', 'username': 'benety'}
Message: SERVER-53661 fix latch name in index_commit_currentop_slow.js
Branch: master
https://github.com/mongodb/mongo/commit/ca69b62fe50e03922c96a75de509f3ad33fb4363
xgen-internal-githook commented on Sat, 15 May 2021 14:06:15 +0000:
Author:
{'name': 'Benety Goh', 'email': 'benety@mongodb.com', 'username': 'benety'}
Message: SERVER-53661 temporarily disable index_commit_currentop_slow.js
Branch: master
https://github.com/mongodb/mongo/commit/beb176da79f83da393da9416b3552d00f4ff50c9
xgen-internal-githook commented on Fri, 14 May 2021 19:50:15 +0000:
Author:
{'name': 'Luis Osta', 'email': 'luis.osta@mongodb.com', 'username': 'LuisOsta'}
Message: SERVER-53661 SessionCatalog mutex is level 0 and is held while acquiring the FutureResolution mutex
Branch: master
https://github.com/mongodb/mongo/commit/4099baf59544e56922641fe10b5cc07d5a99e591
