Hi,
The "KeeperException$ConnectionLossException" exception occurred while the
cluster is running, as we know, it's a Zookeeper "recoverable" exception(And
this exception has been handled in the method of
ZooKeeperWatcher.ZooKeeperWatcher),and the suggestion is that we should retry a
while. Does it necessarily?
Here is the exception logs:
2011-03-21 13:26:53,135 WARN org.apache.hadoop.hbase.zookeeper.ZKUtil:
master:60000-0x22e8e6ee15f0046 Unable to get data of znode
/hbase/unassigned/59ba25120921011b7d9ed4025d30c105
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode =
ConnectionLoss for /hbase/unassigned/59ba25120921011b7d9ed4025d30c105
at org.apache.zookeeper.KeeperException.create(KeeperException.java:90)
at org.apache.zookeeper.KeeperException.create(KeeperException.java:42)
at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:932)
at
org.apache.hadoop.hbase.zookeeper.ZKUtil.getDataAndWatch(ZKUtil.java:549)
at
org.apache.hadoop.hbase.zookeeper.ZKAssign.getData(ZKAssign.java:739)
at
org.apache.hadoop.hbase.master.AssignmentManager.nodeDataChanged(AssignmentManager.java:525)
at
org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.process(ZooKeeperWatcher.java:268)
at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:501)
2011-03-21 13:26:53,137 ERROR
org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher:
master:60000-0x22e8e6ee15f0046 Received unexpected KeeperException, re-throwing
exception
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode =
ConnectionLoss for /hbase/unassigned/59ba25120921011b7d9ed4025d30c105
at org.apache.zookeeper.KeeperException.create(KeeperException.java:90)
at org.apache.zookeeper.KeeperException.create(KeeperException.java:42)
at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:932)
at
org.apache.hadoop.hbase.zookeeper.ZKUtil.getDataAndWatch(ZKUtil.java:549)
at
org.apache.hadoop.hbase.zookeeper.ZKAssign.getData(ZKAssign.java:739)
at
org.apache.hadoop.hbase.master.AssignmentManager.nodeDataChanged(AssignmentManager.java:525)
at
org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.process(ZooKeeperWatcher.java:268)
at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:501)
Expecting for the reply!
Thank you.
Regards,
Jeason Bean
