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From "Chetan Mehrotra (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (OAK-1084) Allow blacklisting of rogue observation listener
Date Wed, 09 Oct 2013 11:01:50 GMT

     [ https://issues.apache.org/jira/browse/OAK-1084?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Chetan Mehrotra updated OAK-1084:

    Summary: Allow blacklisting of rogue observation listener  (was: Allow blacklisting of
rogue observation list)

> Allow blacklisting of rogue observation listener
> ------------------------------------------------
>                 Key: OAK-1084
>                 URL: https://issues.apache.org/jira/browse/OAK-1084
>             Project: Jackrabbit Oak
>          Issue Type: Wish
>          Components: jcr
>            Reporter: Chetan Mehrotra
>            Priority: Minor
> Currently Oak dispatches the observation events through a single thread. As best practice
its recommended that ObservationListener should not block the main event thread and instead
process the event asynchronously in separate thread.
> However it can happen that some rogue implementation does not adhere to this best practice
and blocks the main event thread. It would be helpful to have some support in Oak 
> # To identify such listeners which take more time then a defined interval
> #  Blacklist such listeners from further event processing and log a warning about the
> This feature would be similar to one supported by Felix EventAdmin [1] where EventHandlers
are blacklisted in case they timeout
> [1] http://felix.apache.org/site/apache-felix-event-admin.html#ApacheFelixEventAdmin-Configuration

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