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https://issues.apache.org/jira/browse/OAK-4749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15464422#comment-15464422
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Marcel Reutegger commented on OAK-4749:
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Created JCR-4012 to make the necessary changes in jackrabbit-jcr-commons
{{ListenerTracker}}.
> 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
> Fix For: 1.6
>
>
> 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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