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https://issues.apache.org/jira/browse/OAK-1771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14029006#comment-14029006
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Chetan Mehrotra commented on OAK-1771:
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Merged it to 1.0 with http://svn.apache.org/r1602114
> Avoid lock contention in Tracker.getServices()
> ----------------------------------------------
>
> Key: OAK-1771
> URL: https://issues.apache.org/jira/browse/OAK-1771
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: core
> Reporter: Jukka Zitting
> Assignee: Jukka Zitting
> Fix For: 1.0.1, 1.1
>
>
> The {{getServices()}} method of {{Tracker}} instances returned by the
> {{OsgiWhiteboard}} is synchronized, which leads to lock contention and the
> related performance hit for example when lots of queries are executed in
> parallel, as each query execution looks up the available index provider
> services. We should refactor the {{Tracker}} implementation to avoid
> synchronization of the {{getServices()}} method.
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