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From "Marcel Reutegger (JIRA)" <j...@apache.org>
Subject [jira] [Created] (OAK-4749) Include initial cost in stats for observation processing
Date Mon, 05 Sep 2016 07:59:21 GMT
Marcel Reutegger created OAK-4749:

             Summary: 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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