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https://issues.apache.org/jira/browse/HDFS-6532?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiao Chen updated HDFS-6532:
----------------------------
Attachment: TEST-org.apache.hadoop.hdfs.TestCrcCorruption.xml
I further looked at the issue but not root caused yet.
Seems to me the biggest difference between success and failure cases is that,
success cases have the following line, and then the retry terminates quickly.
No such line in the failure cases, then as Yiqun said, test timeout will cause
an interrupt exception thrown from {{close}} after 50 seconds.
{noformat}
2016-08-20 08:35:03,052 INFO datanode.DataNode
(DataXceiver.java:writeBlock(835)) - opWriteBlock
BP-1047920701-192.168.1.79-1471707299069:blk_1073741826_1008 received exception
java.io.InterruptedIOException: Interruped while waiting for IO on channel
java.nio.channels.SocketChannel[connected local=/127.0.0.1:51075
remote=/127.0.0.1:51111]. 60000 millis timeout left.
{noformat}
Attaching a full failure log for reference, since this has not failed locally
for me at all....
I think there may be some race / corner cases causing said thread(s) not
interrupted when checksum error happens, but haven't found any clue about it so
far. :(
> Intermittent test failure
> org.apache.hadoop.hdfs.TestCrcCorruption.testCorruptionDuringWrt
> ------------------------------------------------------------------------------------------
>
> Key: HDFS-6532
> URL: https://issues.apache.org/jira/browse/HDFS-6532
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode, hdfs-client
> Affects Versions: 2.4.0
> Reporter: Yongjun Zhang
> Attachments: TEST-org.apache.hadoop.hdfs.TestCrcCorruption.xml
>
>
> Per https://builds.apache.org/job/Hadoop-Hdfs-trunk/1774/testReport, we had
> the following failure. Local rerun is successful
> {code}
> Regression
> org.apache.hadoop.hdfs.TestCrcCorruption.testCorruptionDuringWrt
> Failing for the past 1 build (Since Failed#1774 )
> Took 50 sec.
> Error Message
> test timed out after 50000 milliseconds
> Stacktrace
> java.lang.Exception: test timed out after 50000 milliseconds
> at java.lang.Object.wait(Native Method)
> at
> org.apache.hadoop.hdfs.DFSOutputStream.waitForAckedSeqno(DFSOutputStream.java:2024)
> at
> org.apache.hadoop.hdfs.DFSOutputStream.flushInternal(DFSOutputStream.java:2008)
> at
> org.apache.hadoop.hdfs.DFSOutputStream.close(DFSOutputStream.java:2107)
> at
> org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:70)
> at
> org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:98)
> at
> org.apache.hadoop.hdfs.TestCrcCorruption.testCorruptionDuringWrt(TestCrcCorruption.java:133)
> {code}
> See relevant exceptions in log
> {code}
> 2014-06-14 11:56:15,283 WARN datanode.DataNode
> (BlockReceiver.java:verifyChunks(404)) - Checksum error in block
> BP-1675558312-67.195.138.30-1402746971712:blk_1073741825_1001 from
> /127.0.0.1:41708
> org.apache.hadoop.fs.ChecksumException: Checksum error:
> DFSClient_NONMAPREDUCE_-1139495951_8 at 64512 exp: 1379611785 got: -12163112
> at
> org.apache.hadoop.util.DataChecksum.verifyChunkedSums(DataChecksum.java:353)
> at
> org.apache.hadoop.util.DataChecksum.verifyChunkedSums(DataChecksum.java:284)
> at
> org.apache.hadoop.hdfs.server.datanode.BlockReceiver.verifyChunks(BlockReceiver.java:402)
> at
> org.apache.hadoop.hdfs.server.datanode.BlockReceiver.receivePacket(BlockReceiver.java:537)
> at
> org.apache.hadoop.hdfs.server.datanode.BlockReceiver.receiveBlock(BlockReceiver.java:734)
> at
> org.apache.hadoop.hdfs.server.datanode.DataXceiver.writeBlock(DataXceiver.java:741)
> at
> org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opWriteBlock(Receiver.java:124)
> at
> org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:71)
> at
> org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:234)
> at java.lang.Thread.run(Thread.java:662)
> 2014-06-14 11:56:15,285 WARN datanode.DataNode
> (BlockReceiver.java:run(1207)) - IOException in BlockReceiver.run():
> java.io.IOException: Shutting down writer and responder due to a checksum
> error in received data. The error response has been sent upstream.
> at
> org.apache.hadoop.hdfs.server.datanode.BlockReceiver$PacketResponder.sendAckUpstreamUnprotected(BlockReceiver.java:1352)
> at
> org.apache.hadoop.hdfs.server.datanode.BlockReceiver$PacketResponder.sendAckUpstream(BlockReceiver.java:1278)
> at
> org.apache.hadoop.hdfs.server.datanode.BlockReceiver$PacketResponder.run(BlockReceiver.java:1199)
> at java.lang.Thread.run(Thread.java:662)
> ...
> {code}
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