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From Michael Dürig (JIRA) <j...@apache.org>
Subject [jira] [Assigned] (OAK-1484) additional observation queue jmx attributes
Date Mon, 03 Mar 2014 10:20:22 GMT

     [ https://issues.apache.org/jira/browse/OAK-1484?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael Dürig reassigned OAK-1484:
----------------------------------

    Assignee: Michael Dürig

> 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
>            Assignee: Michael Dürig
>
> 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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