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From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-7884) NullPointerException in BlockSender
Date Wed, 04 Mar 2015 15:48:06 GMT
Tsz Wo Nicholas Sze created HDFS-7884:
-----------------------------------------

             Summary: NullPointerException in BlockSender
                 Key: HDFS-7884
                 URL: https://issues.apache.org/jira/browse/HDFS-7884
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: datanode
            Reporter: Tsz Wo Nicholas Sze
            Priority: Blocker


{noformat}
java.lang.NullPointerException
	at org.apache.hadoop.hdfs.server.datanode.BlockSender.<init>(BlockSender.java:264)
	at org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXceiver.java:506)
	at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opReadBlock(Receiver.java:116)
	at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:71)
	at org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:249)
	at java.lang.Thread.run(Thread.java:745)
{noformat}
BlockSender.java:264 is shown below
{code}
      this.volumeRef = datanode.data.getVolume(block).obtainReference();
{code}



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