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https://issues.apache.org/jira/browse/IGNITE-13775?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stanilovsky Evgeny updated IGNITE-13775:
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Release Note: JVM option: IGNITE_PDS_LOG_CP_READ_LOCK_HOLDERS appends
additional info about readlLock holders has partially incorrect code.
> U.ReentrantReadWriteLockTracer improper realization.
> ----------------------------------------------------
>
> Key: IGNITE-13775
> URL: https://issues.apache.org/jira/browse/IGNITE-13775
> Project: Ignite
> Issue Type: Improvement
> Components: general
> Affects Versions: 2.9
> Reporter: Stanilovsky Evgeny
> Assignee: Stanilovsky Evgeny
> Priority: Major
> Fix For: 2.10
>
> Attachments: image-2020-12-01-13-51-39-048.png, screenshot-1.png
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> ReentrantReadWriteLockTracer accepts ReentrantReadWriteLock as a delegate and
> stores delegates for readLock and writeLock. But
> ReentrantReadWriteLock#isWriteLockedByCurrentThread uses sync object to
> evaluate the result instead of writeLock, and ReentrantReadWriteLockTracer
> has it's own sync object.
> As a result, if ReentrantReadWriteLockTracer is used to create checkpoint
> lock (when IGNITE_PDS_LOG_CP_READ_LOCK_HOLDERS=true),
> GridCacheDatabaseSharedManager#checkpointLockIsHeldByThread doesn't work
> correctly: it returns false when checkpoint lock is acquired.
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