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https://issues.apache.org/jira/browse/HDFS-15199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17047262#comment-17047262
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Ayush Saxena commented on HDFS-15199:
-------------------------------------
{{String ioem = e.getMessage();}} is null for {{ClosedChannelException}}
Will add a null check for ioem.
> NPE in BlockSender
> ------------------
>
> Key: HDFS-15199
> URL: https://issues.apache.org/jira/browse/HDFS-15199
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Ayush Saxena
> Assignee: Ayush Saxena
> Priority: Major
>
> {noformat}
> java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.server.datanode.BlockSender.sendPacket(BlockSender.java:662)
> at
> org.apache.hadoop.hdfs.server.datanode.BlockSender.doSendBlock(BlockSender.java:819)
> at
> org.apache.hadoop.hdfs.server.datanode.BlockSender.sendBlock(BlockSender.java:766)
> at
> org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXceiver.java:607)
> at
> org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opReadBlock(Receiver.java:152)
> at
> org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:104)
> at
> org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:290)
> at java.lang.Thread.run(Thread.java:748)
> 2020-02-28 11:49:13,357 [stripedRead-0] INFO datanode.DataNode
> (StripedBlockReader.java:call(182)) - Premature EOF reading from
> org.apache.hadoop.net.SocketInputStream@8a99d11
> 2020-02-28 11:49:13,362 [ResponseProcessor for block
> BP-1162371257-10.19.127.112-1582870703783:blk_-9223372036854775774_1004] WARN
> hdfs.DataStreamer (DataStreamer.java:run(1217)) - Exception for
> BP-1162371257-10.19.127.112-1582870703783:blk
> {noformat}
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