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From "Gary Helmling (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-3755) Catch zk's ConnectionLossException and augment error message with more help
Date Tue, 12 Apr 2011 21:32:05 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13019065#comment-13019065
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Gary Helmling commented on HBASE-3755:
--------------------------------------

My last comment really should be handled more comprehensively as part of HBASE-3065.

Thanks for the update J-D.

+1 on patch.

> Catch zk's ConnectionLossException and augment error message with more help
> ---------------------------------------------------------------------------
>
>                 Key: HBASE-3755
>                 URL: https://issues.apache.org/jira/browse/HBASE-3755
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.90.1
>            Reporter: Jean-Daniel Cryans
>            Assignee: Jean-Daniel Cryans
>             Fix For: 0.90.3
>
>         Attachments: HBASE-3755-v2.patch, HBASE-3755.patch
>
>
> 0.90 has a different behavior regarding ZK connections, it tends to create too many of
them and it's not obvious to users what they should do to fix. I think I've helped at least
5 different users this week with this error.
> By catching ConnectionLossException and augmenting its message, we could say something
like "it's possible that the ZooKeeper server has too many connections from this IP, see doc
at blah" since the ZK server isn't nice enough to let us know what's going on.

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