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https://issues.apache.org/jira/browse/HDFS-7884?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14353028#comment-14353028
]
Hadoop QA commented on HDFS-7884:
---------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12703410/HDFS-7884.patch
against trunk revision 5578e22.
{color:red}-1 patch{color}. Trunk compilation may be broken.
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/9796//console
This message is automatically generated.
> 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: HDFS-7884.patch,
> 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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