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https://issues.apache.org/jira/browse/HDFS-7236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14169647#comment-14169647
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Yongjun Zhang commented on HDFS-7236:
-------------------------------------
Many thanks [~jingzhao]!
FYI, I just took a look at HDFS-7226 (TestDNFencing.testQueueingWithAppend
failed often in latest test) a bit and found that it seems to be related to
HDFS-7217 change too. However, it's more subtle there, and it appears to have
something to do with hflush. I will look more at that jira a bit later.
> Fix TestOpenFilesWithSnapshot#testOpenFilesWithMultipleSnapshots
> ----------------------------------------------------------------
>
> Key: HDFS-7236
> URL: https://issues.apache.org/jira/browse/HDFS-7236
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.6.0
> Reporter: Yongjun Zhang
> Assignee: Yongjun Zhang
> Fix For: 2.6.0
>
> Attachments: HDFS-7236.001.patch
>
>
> Per the following report
> {code}
> ****Recently FAILED builds in url:
> https://builds.apache.org/job/Hadoop-Hdfs-trunk
> THERE ARE 4 builds (out of 5) that have failed tests in the past 7 days,
> as listed below:
> ===>https://builds.apache.org/job/Hadoop-Hdfs-trunk/1898/testReport
> (2014-10-11 04:30:40)
> Failed test:
> org.apache.hadoop.hdfs.server.namenode.ha.TestDNFencing.testQueueingWithAppend
> Failed test:
> org.apache.hadoop.hdfs.server.namenode.ha.TestDNFencingWithReplication.testFencingStress
> Failed test:
> org.apache.hadoop.hdfs.server.namenode.snapshot.TestOpenFilesWithSnapshot.testOpenFilesWithMultipleSnapshots
> ===>https://builds.apache.org/job/Hadoop-Hdfs-trunk/1897/testReport
> (2014-10-10 04:30:40)
> Failed test:
> org.apache.hadoop.hdfs.server.namenode.TestDeadDatanode.testDeadDatanode
> Failed test:
> org.apache.hadoop.hdfs.server.namenode.ha.TestDNFencing.testQueueingWithAppend
> Failed test: org.apache.hadoop.tracing.TestTracing.testReadTraceHooks
> Failed test:
> org.apache.hadoop.hdfs.server.namenode.snapshot.TestOpenFilesWithSnapshot.testOpenFilesWithMultipleSnapshots
> Failed test:
> org.apache.hadoop.hdfs.server.namenode.ha.TestDNFencingWithReplication.testFencingStress
> Failed test: org.apache.hadoop.tracing.TestTracing.testWriteTraceHooks
> ...
> Among 5 runs examined, all failed tests <#failedRuns: testName>:
> 4:
> org.apache.hadoop.hdfs.server.namenode.ha.TestDNFencingWithReplication.testFencingStress
> 2:
> org.apache.hadoop.hdfs.server.namenode.ha.TestDNFencing.testQueueingWithAppend
> 2:
> org.apache.hadoop.hdfs.server.namenode.snapshot.TestOpenFilesWithSnapshot.testOpenFilesWithMultipleSnapshots
> 1:
> org.apache.hadoop.hdfs.server.namenode.TestDeadDatanode.testDeadDatanode
> ...
> {code}
> TestOpenFilesWithSnapshot.testOpenFilesWithMultipleSnapshots failed in most
> recent two runs in trunk. Creating this jira for it (The other two tests that
> failed more often were reported in separate jira HDFS-7221 and HDFS-7226)
> Symptom:
> {code}
> Error Message
> Timed out waiting for Mini HDFS Cluster to start
> Stacktrace
> java.io.IOException: Timed out waiting for Mini HDFS Cluster to start
> at
> org.apache.hadoop.hdfs.MiniDFSCluster.waitClusterUp(MiniDFSCluster.java:1194)
> at
> org.apache.hadoop.hdfs.MiniDFSCluster.restartNameNode(MiniDFSCluster.java:1819)
> at
> org.apache.hadoop.hdfs.MiniDFSCluster.restartNameNode(MiniDFSCluster.java:1789)
> at
> org.apache.hadoop.hdfs.server.namenode.snapshot.TestOpenFilesWithSnapshot.doTestMultipleSnapshots(TestOpenFilesWithSnapshot.java:184)
> at
> org.apache.hadoop.hdfs.server.namenode.snapshot.TestOpenFilesWithSnapshot.testOpenFilesWithMultipleSnapshots(TestOpenFilesWithSnapshot.java:162)
> {code}
> AND
> {code}
> 2014-10-11 12:38:24,385 ERROR datanode.DataNode (DataXceiver.java:run(243)) -
> 127.0.0.1:55303:DataXceiver error processing WRITE_BLOCK operation src:
> /127.0.0.1:32949 dst: /127.0.0.1:55303
> java.io.IOException: Premature EOF from inputStream
> at org.apache.hadoop.io.IOUtils.readFully(IOUtils.java:196)
> at
> org.apache.hadoop.hdfs.protocol.datatransfer.PacketReceiver.doReadFully(PacketReceiver.java:213)
> at
> org.apache.hadoop.hdfs.protocol.datatransfer.PacketReceiver.doRead(PacketReceiver.java:134)
> at
> org.apache.hadoop.hdfs.protocol.datatransfer.PacketReceiver.receiveNextPacket(PacketReceiver.java:109)
> at
> org.apache.hadoop.hdfs.server.datanode.BlockReceiver.receivePacket(BlockReceiver.java:468)
> at
> org.apache.hadoop.hdfs.server.datanode.BlockReceiver.receiveBlock(BlockReceiver.java:772)
> at
> org.apache.hadoop.hdfs.server.datanode.DataXceiver.writeBlock(DataXceiver.java:720)
> at
> org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opWriteBlock(Receiver.java:137)
> at
> org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:74)
> at
> org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:225)
> at java.lang.Thread.run(Thread.java:662)
> {code}
> AND
> {code}
> 2014-10-11 12:38:28,552 WARN datanode.DataNode
> (BPServiceActor.java:offerService(751)) - RemoteException in offerService
> org.apache.hadoop.ipc.RemoteException(java.io.IOException): Got incremental
> block report from unregistered or dead node
> at
> org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.processIncrementalBlockReport(BlockManager.java:3021)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.processIncrementalBlockReport(FSNamesystem.java:6355)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.blockReceivedAndDeleted(NameNodeRpcServer.java:1137)
> at
> org.apache.hadoop.hdfs.protocolPB.DatanodeProtocolServerSideTranslatorPB.blockReceivedAndDeleted(DatanodeProtocolServerSideTranslatorPB.java:209)
> at
> org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos$DatanodeProtocolService$2.callBlockingMethod(DatanodeProtocolProtos.java:26304)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:639)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:966)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2125)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2121)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:396)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1640)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2119)
> at org.apache.hadoop.ipc.Client.call(Client.java:1468)
> at org.apache.hadoop.ipc.Client.call(Client.java:1399)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:232)
> at com.sun.proxy.$Proxy18.blockReceivedAndDeleted(Unknown Source)
> at
> org.apache.hadoop.hdfs.protocolPB.DatanodeProtocolClientSideTranslatorPB.blockReceivedAndDeleted(DatanodeProtocolClientSideTranslatorPB.java:224)
> at
> org.apache.hadoop.hdfs.server.datanode.BPServiceActor.reportReceivedDeletedBlocks(BPServiceActor.java:307)
> at
> org.apache.hadoop.hdfs.server.datanode.BPServiceActor.offerService(BPServiceActor.java:711)
> at
> org.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:850)
> at java.lang.Thread.run(Thread.java:662)
> {code}
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