[MDEV-24171] index_online_log is incorrectly instrumented as rw-lock, not mutex - Jira

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Type: Bug
Status: Closed (View Workflow)
Priority: Major
Resolution: Fixed
Affects Version/s: 10.2(EOL), 10.3(EOL), 10.4(EOL), 10.5(EOL)
Fix Version/s: 10.2.37, 10.3.28, 10.4.18, 10.5.9
Component/s: Performance Schema, Storage Engine - InnoDB
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Description

While working on ~~MDEV-24167~~, I noticed that index_online_log is being instrumented as rw-lock, instead of being instrumented as a mutex. The exact consequences of this are unknown. The row_lock_t::mutex is only used during ALTER ONLINE TABLE when concurrent DML is being buffered or applied.

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MDEV-24167 InnoDB unnecessarily uses complex rw-lock implementation

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Assignee:: Marko Mäkelä

Reporter:: Marko Mäkelä

Votes:: 0 Vote for this issue

Watchers:: 1 Start watching this issue

Dates

Created:: 2020-11-09 07:38

Updated:: 2020-11-10 06:55

Resolved:: 2020-11-10 06:55

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