[jira] [Commented] (OAK-941) MBean to track sessions

["Rob Ryan (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/OAK-941?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14055030#comment-14055030 ] 

Rob Ryan commented on OAK-941:
------------------------------

I'll will be filing a bug that the current implementation of the registration/unregistration of the mbean introduces a performance bottleneck in logout where com.google.common.util.concurrent.Futures.addCallback(ListenableFuture, FutureCallback) is used this results in excessive time spent in  java.util.concurrent.FutureTask$Sync.innerGet().  This occurred with jdk 1.7b25. I will recheck with jdk1.7b55 to see if that is a viable workaround as the FutureTask implementation has changed.



> MBean to track sessions
> -----------------------
>
>                 Key: OAK-941
>                 URL: https://issues.apache.org/jira/browse/OAK-941
>             Project: Jackrabbit Oak
>          Issue Type: Sub-task
>          Components: core, jcr
>            Reporter: Michael Dürig
>            Assignee: Michael Dürig
>              Labels: monitoring
>             Fix For: 0.15
>
>
> Create JMX MBean to track Session and session related information:
> * stack trace from where the session has been acquired,
> * age of the session,
> * last (read/write) access to the session,
> * last refresh of the session,
> * conflict information (e.g. unresolved conflicts),
> * session attributes,
> * ...



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