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From "Stefan Egli (JIRA)" <j...@apache.org>
Subject [jira] [Created] (OAK-1484) additional observation queue jmx attributes
Date Mon, 03 Mar 2014 10:09:20 GMT
Stefan Egli created OAK-1484:
--------------------------------

             Summary: additional observation queue jmx attributes
                 Key: OAK-1484
                 URL: https://issues.apache.org/jira/browse/OAK-1484
             Project: Jackrabbit Oak
          Issue Type: Improvement
          Components: commons
    Affects Versions: 0.17.1
            Reporter: Stefan Egli


The following jmx attributes would be very useful to have, when debugging problems or checking
the health of observation listeners and queues at runtime:

 * length of an observation listener's event queue
 * duration of stay of oldest event in an observation listener's event queue

Especially the second point can be used to judge if an observation listener is 'healthy' or
not: eg if the duration is a few seconds, things are probably fine. If the duration is over
a minute, then that could raise a flag.



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