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https://issues.apache.org/jira/browse/HDFS-12566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16201117#comment-16201117
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Hanisha Koneru commented on HDFS-12566:
---------------------------------------
Hi [~lukmajercak], did you see this exception anywhere other than in
TestDataTransferProtocol#testDataTransferProtocol?
As far as I checked, the {{requestedChecksum}} cannot be null in normal
conditions. Is there any other object that can potentially be null in
BlockReceiver?
> BlockReceiver can leak FileInputStream
> --------------------------------------
>
> Key: HDFS-12566
> URL: https://issues.apache.org/jira/browse/HDFS-12566
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode, hdfs
> Reporter: Lukas Majercak
> Assignee: Lukas Majercak
> Priority: Minor
> Attachments: HDFS-12566.001.patch
>
>
> BlockReceiver's constructor can leak file handles if it encounters null
> pointer exceptions. One example of this is
> TestDataTransferProtocol.testDataTransferProtocol:
> java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.server.datanode.BlockReceiver.<init>(BlockReceiver.java:263)
> at
> org.apache.hadoop.hdfs.server.datanode.DataXceiver.getBlockReceiver(DataXceiver.java:1291)
> at
> org.apache.hadoop.hdfs.server.datanode.DataXceiver.writeBlock(DataXceiver.java:758)
> at
> org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opWriteBlock(Receiver.java:173)
> at
> org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:107)
> at
> org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:290)
> at java.lang.Thread.run(Thread.java:748)
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