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From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-7884) NullPointerException in BlockSender
Date Sun, 08 Mar 2015 18:11:38 GMT

     [ https://issues.apache.org/jira/browse/HDFS-7884?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo Nicholas Sze updated HDFS-7884:
--------------------------------------
    Attachment: org.apache.hadoop.hdfs.TestAppendSnapshotTruncate-output.txt

org.apache.hadoop.hdfs.TestAppendSnapshotTruncate-output.txt: NPE inside.

> 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
>            Assignee: Brahma Reddy Battula
>            Priority: Blocker
>         Attachments: org.apache.hadoop.hdfs.TestAppendSnapshotTruncate-output.txt
>
>
> {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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