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https://issues.apache.org/jira/browse/OAK-2680?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14381670#comment-14381670
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Marc Pfaff commented on OAK-2680:
---------------------------------

IMHO this hook is already available, with the BackgroundObserver's abstract 
added() method, no? It does allow clients to know about the current queue size 
and do logging and the like based on that, like the ChangeProcessor for 
example. 

> Report a full observation queue situation to the logfile
> --------------------------------------------------------
>
>                 Key: OAK-2680
>                 URL: https://issues.apache.org/jira/browse/OAK-2680
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: oak-core
>    Affects Versions: 1.1.7
>            Reporter: Marc Pfaff
>            Assignee: Michael Dürig
>            Priority: Minor
>             Fix For: 1.1.8
>
>         Attachments: OAK-2680.patch
>
>
> This is a improvement request for having an explicit warning in the log file, 
> when the BackgroundObserver's queue maximum is reached. 
> Currently, in that case, a warning is logged from the ChangeProcessor 
> observer only. But as each observer has it's own queue, a warning from a more 
> central place covering all observers would be helpful.



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