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https://issues.apache.org/jira/browse/OAK-3588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14998229#comment-14998229
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Alex Parvulescu commented on OAK-3588:
--------------------------------------
To enable set the system property {{oak.segmentNodeStore.commitFairLock}} to
{{true}}
if enabled the {{SegmentNodeStore}} will log the following at info level:
bq. initializing SegmentNodeStore with the commitFairLock option enabled.
> SegmentNodeStore allow tweaking of lock fairness
> ------------------------------------------------
>
> Key: OAK-3588
> URL: https://issues.apache.org/jira/browse/OAK-3588
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: segmentmk
> Reporter: Alex Parvulescu
> Assignee: Alex Parvulescu
> Fix For: 1.3.10, 1.2.8, 1.0.24
>
> Attachments: OAK-3588.patch
>
>
> This will expose the merge semaphores's fairness policy as the semaphore is
> currently configured as _NonfairSync_ (default value).
> Opening this option will be beneficial in collecting more stats around thread
> starvation and what the best policy is (fair vs non fair).
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