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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-5890) SplitLog Rescan BusyWaits upon Zk.CONNECTIONLOSS
Date Sat, 30 Jun 2012 16:36:44 GMT

     [ https://issues.apache.org/jira/browse/HBASE-5890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Lars Hofhansl updated HBASE-5890:
---------------------------------

    Fix Version/s:     (was: 0.94.1)
                   0.94.2

And on to 0.94.2
                
> SplitLog Rescan BusyWaits upon Zk.CONNECTIONLOSS
> ------------------------------------------------
>
>                 Key: HBASE-5890
>                 URL: https://issues.apache.org/jira/browse/HBASE-5890
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Nicolas Spiegelberg
>            Priority: Minor
>             Fix For: 0.96.0, 0.89-fb, 0.94.2
>
>         Attachments: HBASE-5890.patch
>
>
> We ran into a production issue yesterday where the SplitLogManager tried to create a
Rescan node in ZK.  The createAsync() generated a KeeperException.CONNECTIONLOSS that was
immedately sent to processResult(), createRescan node with --retry_count was called, and this
created a CPU busywait that also clogged up the logs.  We should handle this better.

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