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https://issues.apache.org/jira/browse/HBASE-1311?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12707002#action_12707002
]
stack commented on HBASE-1311:
------------------------------
Had same thing happen to me last night:
{code}
2009-05-07 07:39:29,348 [main-EventThread] INFO
org.apache.hadoop.hbase.regionserver.HRegionServer: Got ZooKeeper event, state:
Disconnected, type: None, path: null
2009-05-07 07:39:29,368 [regionserver/0:0:0:0:0:0:0:0:60021.worker-EventThread]
DEBUG org.apache.hadoop.hbase.client.HConnectionManager$TableServers: Got
ZooKeeper event, state: Disconnected, type: None, path: null
2009-05-07 07:39:33,249 [regionserver/0:0:0:0:0:0:0:0:60021.worker-EventThread]
DEBUG org.apache.hadoop.hbase.client.HConnectionManager$TableServers: Got
ZooKeeper event, state: SyncConnected, type: None, path: null
2009-05-07 07:39:33,250 [main-EventThread] DEBUG
org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper: Set watcher on master
address ZNode /hbase/master
2009-05-07 07:39:33,250 [main-EventThread] INFO
org.apache.hadoop.hbase.regionserver.HRegionServer: Got ZooKeeper event, state:
SyncConnected, type: None, path: null
2009-05-07 07:39:33,251 [main-EventThread] DEBUG
org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper: Set watcher on master
address ZNode /hbase/master
2009-05-07 07:39:49,858 [regionserver/0:0:0:0:0:0:0:0:60021.worker-EventThread]
DEBUG org.apache.hadoop.hbase.client.HConnectionManager$TableServers: Got
ZooKeeper event, state: Disconnected, type: None, path: null
2009-05-07 07:39:50,048 [main-EventThread] INFO
org.apache.hadoop.hbase.regionserver.HRegionServer: Got ZooKeeper event, state:
Disconnected, type: None, path: null
2009-05-07 07:39:55,318 [main-EventThread] WARN
org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper: Failed to set watcher on
ZNode /hbase/master
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode =
ConnectionLoss
at org.apache.zookeeper.KeeperException.create(KeeperException.java:90)
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:350)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.process(HRegionServer.java:346)
at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:366)
2009-05-07 07:39:55,319 [main-EventThread] WARN
org.apache.hadoop.hbase.regionserver.HRegionServer: Unable to set watcher on
ZooKeeper master address. Retrying.
2009-05-07 07:40:00,479 [main-EventThread] WARN
org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper: Failed to set watcher on
ZNode /hbase/master
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode =
ConnectionLoss
at org.apache.zookeeper.KeeperException.create(KeeperException.java:90)
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:350)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.process(HRegionServer.java:346)
at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:366)
2009-05-07 07:40:00,480 [main-EventThread] WARN
org.apache.hadoop.hbase.regionserver.HRegionServer: Unable to set watcher on
ZooKeeper master address. Retrying.
2009-05-07 07:40:05,643 [main-EventThread] DEBUG
org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper: Set watcher on master
address ZNode /hbase/master
2009-05-07 07:40:05,643 [main-EventThread] INFO
org.apache.hadoop.hbase.regionserver.HRegionServer: Got ZooKeeper event, state:
SyncConnected, type: None, path: null
2009-05-07 07:40:05,644 [main-EventThread] DEBUG
org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper: Set watcher on master
address ZNode /hbase/master
2009-05-07 07:40:05,721 [regionserver/0:0:0:0:0:0:0:0:60021.worker-EventThread]
DEBUG org.apache.hadoop.hbase.client.HConnectionManager$TableServers: Got
ZooKeeper event, state: SyncConnected, type: None, path: null
2009-05-07 07:40:19,108 [main-EventThread] INFO
org.apache.hadoop.hbase.regionserver.HRegionServer: Got ZooKeeper event, state:
Disconnected, type: None, path: null
2009-05-07 07:40:19,188 [regionserver/0:0:0:0:0:0:0:0:60021.worker-EventThread]
DEBUG org.apache.hadoop.hbase.client.HConnectionManager$TableServers: Got
ZooKeeper event, state: Disconnected, type: None, path: null
2009-05-07 07:40:24,218 [main-EventThread] WARN
org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper: Failed to set watcher on
ZNode /hbase/master
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode =
ConnectionLoss
at org.apache.zookeeper.KeeperException.create(KeeperException.java:90)
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:350)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.process(HRegionServer.java:346)
at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:366)
2009-05-07 07:40:24,218 [main-EventThread] WARN
org.apache.hadoop.hbase.regionserver.HRegionServer: Unable to set watcher on
ZooKeeper master address. Retrying.
2009-05-07 07:40:29,328 [main-EventThread] WARN
org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper: Failed to set watcher on
ZNode /hbase/master
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode =
ConnectionLoss
at org.apache.zookeeper.KeeperException.create(KeeperException.java:90)
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:350)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.process(HRegionServer.java:346)
....
{code}
> 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
> Fix For: 0.20.0
>
> Attachments: dumb-wrapper-hack.patch
>
>
> 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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