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https://issues.apache.org/jira/browse/OAK-4122?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Francesco Mari updated OAK-4122:
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Fix Version/s: (was: Segment Tar 0.0.4)
Segment Tar 0.0.6
> Replace the commit semaphore in the segment node store with a scheduler
> -----------------------------------------------------------------------
>
> Key: OAK-4122
> URL: https://issues.apache.org/jira/browse/OAK-4122
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: segment-tar
> Reporter: Michael Dürig
> Assignee: Francesco Mari
> Labels: performance, scalability, throughput
> Fix For: 1.6, Segment Tar 0.0.6
>
>
> {{SegmentNodeStore}} currently uses a semaphore to coordinate concurrent
> commits thus relying on the scheduling algorithm of that implementation and
> ultimately of the JVM for in what order commits are processed.
> I think it would be beneficial to replace that semaphore with an explicit
> queue of pending commit. This would allow us to implement a proper scheduler
> optimising for e.g. minimal system load, maximal throughput or minimal
> latency etc. A scheduler could e.g. give precedence to big commits and order
> commits along the order of its base revisions, which would decrease the
> amount of work to be done in rebasing.
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