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Posted to dev@hbase.apache.org by "Nitay Joffe (JIRA)" <ji...@apache.org> on 2009/04/05 21:51:12 UTC
[jira] Commented: (HBASE-1311) ZooKeeperWrapper: Failed to set
watcher on ZNode /hbase/master
[ https://issues.apache.org/jira/browse/HBASE-1311?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12695903#action_12695903 ]
Nitay Joffe commented on HBASE-1311:
------------------------------------
OK, the dreaded session expired event on the regionserver. Seen this before on client side. Will look into it. Thanks.
> ZooKeeperWrapper: Failed to set watcher on ZNode /hbase/master
> --------------------------------------------------------------
>
> Key: HBASE-1311
> URL: https://issues.apache.org/jira/browse/HBASE-1311
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: Andrew Purtell
> Assignee: Nitay Joffe
>
> After about 12 hours of operation, this repeats over and over in the regionserver log:
> 2009-04-05 19:44:38,445 WARN org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper: Failed to set watcher on ZNode /hbase/master
> org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = Session expired
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:118)
> at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:709)
> at org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper.watchMasterAddress(ZooKeeperWrapper.java:235)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.watchMasterAddress(HRegionServer.java:343)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.process(HRegionServer.java:339)
> at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:366)
> 2009-04-05 19:44:38,445 WARN org.apache.hadoop.hbase.regionserver.HRegionServer: Unable to set watcher on ZooKeeper master address. Retrying.
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