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https://issues.apache.org/jira/browse/MAPREDUCE-6363?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14706491#comment-14706491
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Ajith S commented on MAPREDUCE-6363:
------------------------------------
Hi [~ajisakaa]
I think what [~uladz] is pointing, that when we run CREATE test, we will create
files withe unique names, thanks to taskid, so CREATE is fine. But when we run
rename or delete, the taskid will be new and it will not actually rename or
delete the files(created by CREATE benchmark) because it will not find the file
name based on "file_"+taskId as taskId will be new. right.?
> [NNBench] Lease mismatch error when running with multiple mappers
> -----------------------------------------------------------------
>
> Key: MAPREDUCE-6363
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6363
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: benchmarks
> Reporter: Brahma Reddy Battula
> Assignee: Vlad Sharanhovich
> Priority: Critical
> Fix For: 2.8.0
>
> Attachments: HDFS4929.patch, MAPREDUCE-6363-001.patch,
> MAPREDUCE-6363-002.patch, MAPREDUCE-6363-003.patch
>
>
> Command :
> ./yarn jar
> ../share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.0.1-tests.jar
> nnbench -operation create_write -numberOfFiles 1000 -blockSize 268435456
> -bytesToWrite 1024000000 -baseDir /benchmarks/NNBench`hostname -s`
> -replicationFactorPerFile 3 -maps 100 -reduces 10
> Trace :
> 013-06-21 10:44:53,763 INFO org.apache.hadoop.ipc.Server: IPC Server handler
> 7 on 9005, call org.apache.hadoop.hdfs.protocol.ClientProtocol.addBlock from
> 192.168.105.214:36320: error:
> org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException: Lease mismatch
> on /benchmarks/NNBenchlinux-185/data/file_linux-214__0 owned by
> DFSClient_attempt_1371782327901_0001_m_000048_0_1383437860_1 but is accessed
> by DFSClient_attempt_1371782327901_0001_m_000084_0_1880545303_1
> org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException: Lease mismatch
> on /benchmarks/NNBenchlinux-185/data/file_linux-214__0 owned by
> DFSClient_attempt_1371782327901_0001_m_000048_0_1383437860_1 but is accessed
> by DFSClient_attempt_1371782327901_0001_m_000084_0_1880545303_1
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:2351)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.analyzeFileState(FSNamesystem.java:2098)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2019)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:501)
> at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:213)
> at
> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:52012)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:435)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:925)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1710)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1706)
> 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:1232)
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