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From "gaojinchao (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-3800) If HMaster is started after NN without starting DN in Hbase 090.2 then HMaster is not able to start due to AlreadyCreatedException for /hbase/hbase.version
Date Wed, 20 Apr 2011 01:09:05 GMT
If HMaster is started after NN without starting DN in Hbase 090.2 then HMaster is not able
to start due to AlreadyCreatedException for /hbase/hbase.version
-----------------------------------------------------------------------------------------------------------------------------------------------------------

                 Key: HBASE-3800
                 URL: https://issues.apache.org/jira/browse/HBASE-3800
             Project: HBase
          Issue Type: Bug
          Components: master
    Affects Versions: 0.90.2
            Reporter: gaojinchao


It reproduces when HMaster is started for the first time and NN is started without starting
DN

Hmaster logs:
2011-04-19 16:49:09,208 DEBUG org.apache.hadoop.hbase.master.ActiveMasterManager: A master
is now available
2011-04-19 16:49:09,400 WARN org.apache.hadoop.hbase.util.FSUtils: Version file was empty,
odd, will try to set it.
2011-04-19 16:51:09,674 WARN org.apache.hadoop.hdfs.DFSClient: DataStreamer Exception: org.apache.hadoop.ipc.RemoteException:
java.io.IOException: File /hbase/hbase.version could only be replicated to 0 nodes, instead
of 1
...........

2011-04-19 16:51:09,674 WARN org.apache.hadoop.hdfs.DFSClient: Error Recovery for block null
bad datanode[0] nodes == null
2011-04-19 16:51:09,674 WARN org.apache.hadoop.hdfs.DFSClient: Could not get block locations.
Source file "/hbase/hbase.version" - Aborting...
2011-04-19 16:51:09,674 WARN org.apache.hadoop.hbase.util.FSUtils: Unable to create version
file at hdfs://C4C1:9000/hbase, retrying: org.apache.hadoop.ipc.RemoteException: java.io.IOException:
File /hbase/hbase.version could only be replicated to 0 nodes, instead of 1
...........

2011-04-19 16:56:19,695 WARN org.apache.hadoop.hbase.util.FSUtils: Unable to create version
file at hdfs://C4C1:9000/hbase, retrying: org.apache.hadoop.ipc.RemoteException: org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException:
failed to create file /hbase/hbase.version for DFSClient_hb_m_C4C1.site:60000_1303202948768
on client 157.5.100.1 because current leaseholder is trying to recreate file.
org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException: failed to create file /hbase/hbase.version
for DFSClient_hb_m_C4C1.site:60000_1303202948768 on client 157.5.100.1 because current leaseholder
is trying to recreate file.
       at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startFileInternal(FSNamesystem.java:1068)
....


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