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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-2441) ZK failures early in RS startup sequence cause infinite busy loop
Date Sat, 05 Jun 2010 22:04:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2441?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12875953#action_12875953

Todd Lipcon commented on HBASE-2441:

I'm going to be stubborn and try to write a test for this even though you +1ed :) Hopefully
will do so this week.
These issues are so rare to reproduce "in the wild" that I think it's especially important
to have targeted tests.
Otherwise it's quite likely we'll regress them down the road.

> ZK failures early in RS startup sequence cause infinite busy loop
> -----------------------------------------------------------------
>                 Key: HBASE-2441
>                 URL: https://issues.apache.org/jira/browse/HBASE-2441
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.20.3
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: 0.21.0
>         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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