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Posted to oak-issues@jackrabbit.apache.org by "Marcel Reutegger (JIRA)" <ji...@apache.org> on 2016/09/12 08:16:21 UTC

[jira] [Resolved] (OAK-4749) Include initial cost in stats for observation processing

     [ https://issues.apache.org/jira/browse/OAK-4749?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Marcel Reutegger resolved OAK-4749.
-----------------------------------
       Resolution: Fixed
    Fix Version/s: 1.5.10

Applied patch to trunk: http://svn.apache.org/r1760304

> Include initial cost in stats for observation processing
> --------------------------------------------------------
>
>                 Key: OAK-4749
>                 URL: https://issues.apache.org/jira/browse/OAK-4749
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: jcr
>            Reporter: Marcel Reutegger
>            Assignee: Marcel Reutegger
>            Priority: Minor
>              Labels: observation
>             Fix For: 1.6, 1.5.10
>
>         Attachments: OAK-4749.patch
>
>
> The jackrabbit-jcr-commons {{ListenerTracker}} collects timing for JCR event listeners. It tracks producer (oak internal) and consumer (JCR EventListener) time. The initial producer cost is currently not reflected in these stats, because {{ChangeProcessor}} in oak-jcr does an initial {{hasNext()}} on the {{EventIterator}} outside of the {{ListenerTracker}}. For some listeners this initial producer time may even account for the entire cost when the event filter rejects all changes.



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