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0.95.2 upgrade errors
We were able to migrate one cluster to 0.95.2 (from 0.94.11) without any problems.
But in another clusters, we have run into a few issues . Any pointers

13/09/13 07:57:09 FATAL wal.FSHLog: Could not sync. Requesting roll of hlog
java.io.IOException: DFSOutputStream is closed
        at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.sync(DFSClient.java:3845)
        at org.apache.hadoop.fs.FSDataOutputStream.sync(FSDataOutputStream.java:97)
        at org.apache.hadoop.hbase.regionserver.wal.ProtobufLogWriter.sync(ProtobufLogWriter.java:135)
        at org.apache.hadoop.hbase.regionserver.wal.FSHLog.syncer(FSHLog.java:1075)
        at org.apache.hadoop.hbase.regionserver.wal.FSHLog.syncer(FSHLog.java:1013)
        at org.apache.hadoop.hbase.regionserver.wal.FSHLog.sync(FSHLog.java:1186)
        at org.apache.hadoop.hbase.regionserver.wal.FSHLog$LogSyncer.run(FSHLog.java:964)
at java.lang.Thread.run(Thread.java:662)
13/09/13 07:57:09 ERROR wal.FSHLog: Error while syncing, requesting close of hlog
java.io.IOException: DFSOutputStream is closed
        at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.sync(DFSClient.java:3845)
        at org.apache.hadoop.fs.FSDataOutputStream.sync(FSDataOutputStream.java:97)
        at org.apache.hadoop.hbase.regionserver.wal.ProtobufLogWriter.sync(ProtobufLogWriter.java:135)
        at org.apache.hadoop.hbase.regionserver.wal.FSHLog.syncer(FSHLog.java:1075)
        at org.apache.hadoop.hbase.regionserver.wal.FSHLog.syncer(FSHLog.java:1013)
        at org.apache.hadoop.hbase.regionserver.wal.FSHLog.sync(FSHLog.java:1186)
        at org.apache.hadoop.hbase.regionserver.wal.FSHLog$LogSyncer.run(FSHLog.java:964)
        at java.lang.Thread.run(Thread.java:662)
13/09/13 07:57:09 INFO regionserver.HRegionServer: stopping server ssp-region1,60020,1379073423978; all regions closed.
13/09/13 07:57:10 INFO wal.FSHLog: RS_OPEN_META-ssp-region1:60020-0.logSyncer exiting
13/09/13 07:57:10 ERROR regionserver.HRegionServer: Metalog close and delete failed
java.io.IOException: IOException flush:org.apache.hadoop.ipc.RemoteException: java.io.IOException: java.lang.NoSuchMethodException: org.apache.hadoop.hdfs.protocol.ClientProtocol.fsync(java.lang.String, java.lang.String)
        at java.lang.Class.getMethod(Class.java:1605)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:581)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1444)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1440)

and finally the region shuts down

13/09/13 07:57:10 INFO wal.FSHLog: regionserver60020.logSyncer exiting
13/09/13 07:57:10 INFO regionserver.Leases: regionserver60020 closing leases
13/09/13 07:57:10 INFO regionserver.Leases: regionserver60020 closed leases
13/09/13 07:57:15 INFO regionserver.HRegionServer$PeriodicMemstoreFlusher: regionserver60020.periodicFlusher exiting
13/09/13 07:57:15 INFO regionserver.Leases: regionserver60020.leaseChecker closing leases
13/09/13 07:57:15 INFO regionserver.Leases: regionserver60020.leaseChecker closed leases
13/09/13 07:57:15 INFO zookeeper.ZooKeeper: Session: 0x141172e5a590008 closed
13/09/13 07:57:15 INFO zookeeper.ClientCnxn: EventThread shut down
13/09/13 07:57:15 INFO regionserver.HRegionServer: stopping server ssp-region1,60020,1379073423978; zookeeper connection closed.
13/09/13 07:57:15 INFO regionserver.HRegionServer: regionserver60020 exiting
13/09/13 07:57:15 ERROR regionserver.HRegionServerCommandLine: Region server exiting
java.lang.RuntimeException: HRegionServer Aborted
        at org.apache.hadoop.hbase.regionserver.HRegionServerCommandLine.start(HRegionServerCommandLine.java:66)
        at org.apache.hadoop.hbase.regionserver.HRegionServerCommandLine.run(HRegionServerCommandLine.java:85)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:78)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.main(HRegionServer.java:2309)
13/09/13 07:57:15 INFO regionserver.ShutdownHook: Shutdown hook starting; hbase.shutdown.hook=true; fsShutdownHook=Thread[Thread-4,5,main]

 
Regards,
- kiru