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From "Benoit Sigoure (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-2849) HBase clients cannot recover when their ZooKeeper session becomes invalid
Date Sat, 24 Jul 2010 03:59:52 GMT

     [ https://issues.apache.org/jira/browse/HBASE-2849?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Benoit Sigoure updated HBASE-2849:
----------------------------------

               Status: Patch Available  (was: Open)
    Affects Version/s: 0.89.20100621

> HBase clients cannot recover when their ZooKeeper session becomes invalid
> -------------------------------------------------------------------------
>
>                 Key: HBASE-2849
>                 URL: https://issues.apache.org/jira/browse/HBASE-2849
>             Project: HBase
>          Issue Type: Bug
>          Components: client
>    Affects Versions: 0.89.20100621
>            Reporter: stack
>            Assignee: Benoit Sigoure
>            Priority: Critical
>             Fix For: 0.90.0
>
>         Attachments: 0001-HBASE-2849-Have-HBase-clients-recover-from-ZooKeeper.patch
>
>
> Someone made mention of this loop last week but I don't think I filed an issue.  Here
is another instance, again from a secret hbase admirer:
> "It seems that when Zookeeper dies and restarts, all client applications need to be restarted
too. I just restarted HBase in non-distributed mode (which includes a ZK) and now my application
can't reconnect to ZK unless I restart it too.  I'm stuck in this loop:
> {code}
> 2010-07-19 00:13:05,725 INFO org.apache.zookeeper.server.NIOServerCnxn:
>   Closed socket connection for client /127.0.0.1:55153 (no session established for client)
> 2010-07-19 00:13:07,052 INFO org.apache.zookeeper.server.NIOServerCnxn:
>   Accepted socket connection from /127.0.0.1:55154
> 2010-07-19 00:13:07,053 INFO org.apache.zookeeper.server.NIOServerCnxn:
>   Refusing session request for client /127.0.0.1:55154 as it has seen zxid 0xf5 our last
zxid is 0xd7
>   client must try another server
> {code}
> "

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