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https://issues.apache.org/jira/browse/HBASE-2441?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon updated HBASE-2441:
-------------------------------

    Attachment: hbase-2441.txt

Here's a patch that fixes this. Would appreciate if someone's able to reproduce 
- not sure how to write a test plan for it and haven't been able to reproduce 
it quite yet. The trick is to get a ZK session and have it expire before 
reportForDuty is called (perhaps by making the RS retry a bunch of times to 
talk to the master)

> ZK failures early in RS startup sequence cause infinite busy loop
> -----------------------------------------------------------------
>
>                 Key: HBASE-2441
>                 URL: https://issues.apache.org/jira/browse/HBASE-2441
>             Project: Hadoop HBase
>          Issue Type: Bug
>    Affects Versions: 0.20.3
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>         Attachments: hbase-2441.txt
>
>
> If the RS loses its ZK session before it reports for duty, the abort() call 
> will trigger an NPE, and then the stop boolean doesn't get toggled. The RS 
> will then loop forever trying to register itself in the expired ZK session, 
> and fill up the logs.

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