Vinay created HDFS-5503:
---------------------------

             Summary: Datanode#checkDiskError also should check for 
ClosedChannelException
                 Key: HDFS-5503
                 URL: https://issues.apache.org/jira/browse/HDFS-5503
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: Vinay
            Assignee: Vinay


out file
==============
{noformat}
Exception in thread "PacketResponder: 
BP-52063768-xxxxxxxxx-1383447451718:blk_1073755206_1099511661730, 
type=LAST_IN_PIPELINE, downstreams=0:[]" java.lang.NullPointerException
        at 
org.apache.hadoop.hdfs.server.datanode.DataNode.checkDiskError(DataNode.java:1363)
        at 
org.apache.hadoop.hdfs.server.datanode.BlockReceiver$PacketResponder.run(BlockReceiver.java:1233)
        at java.lang.Thread.run(Thread.java:662){noformat}

log file
=======
{noformat}2013-11-08 21:23:36,622 WARN 
org.apache.hadoop.hdfs.server.datanode.DataNode: IOException in 
BlockReceiver.run():
java.nio.channels.ClosedChannelException
        at 
sun.nio.ch.SocketChannelImpl.ensureWriteOpen(SocketChannelImpl.java:133)
        at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:324)
        at 
org.apache.hadoop.net.SocketOutputStream$Writer.performIO(SocketOutputStream.java:63)
        at 
org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:142)
        at 
org.apache.hadoop.net.SocketOutputStream.write(SocketOutputStream.java:159)
        at 
org.apache.hadoop.net.SocketOutputStream.write(SocketOutputStream.java:117)
        at 
java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
        at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123)
        at java.io.DataOutputStream.flush(DataOutputStream.java:106)
        at 
org.apache.hadoop.hdfs.server.datanode.BlockReceiver$PacketResponder.run(BlockReceiver.java:1212)
        at java.lang.Thread.run(Thread.java:662)
2013-11-08 21:23:36,622 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: 
checkDiskError: exception:
java.nio.channels.ClosedChannelException
        at 
sun.nio.ch.SocketChannelImpl.ensureWriteOpen(SocketChannelImpl.java:133)
        at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:324)
        at 
org.apache.hadoop.net.SocketOutputStream$Writer.performIO(SocketOutputStream.java:63)
        at 
org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:142)
        at 
org.apache.hadoop.net.SocketOutputStream.write(SocketOutputStream.java:159)
        at 
org.apache.hadoop.net.SocketOutputStream.write(SocketOutputStream.java:117)
        at 
java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
        at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123)
        at java.io.DataOutputStream.flush(DataOutputStream.java:106)
        at 
org.apache.hadoop.hdfs.server.datanode.BlockReceiver$PacketResponder.run(BlockReceiver.java:1212)
        at java.lang.Thread.run(Thread.java:662){noformat}



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