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From "Cosmin Lehene (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5890) SplitLog Rescan BusyWaits upon Zk.CONNECTIONLOSS
Date Thu, 08 Jan 2015 10:09:35 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14269122#comment-14269122
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Cosmin Lehene commented on HBASE-5890:
--------------------------------------

[~nspiegelberg], [~stack], [~apurtell] still valid? Perhaps it's worth a refresh?

> 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
>         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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