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https://issues.apache.org/jira/browse/HBASE-2849?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12889934#action_12889934
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Jonathan Gray commented on HBASE-2849:
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Client+ZK interaction just got a makeover in the master rewrite branch. It now
handles master failovers properly and re-initializes zk connections but I'm not
sure it will sustain a zk restart. Any chance of a reproducing unit test?
> Clients stuck in loop doing "NIOServerCnxn: Closed socket connection"
> ---------------------------------------------------------------------
>
> Key: HBASE-2849
> URL: https://issues.apache.org/jira/browse/HBASE-2849
> Project: HBase
> Issue Type: Bug
> Reporter: stack
> Fix For: 0.90.0
>
>
> 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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