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Posted to common-dev@hadoop.apache.org by "Suman Sehgal (JIRA)" <ji...@apache.org> on 2008/10/01 19:17:44 UTC
[jira] Commented: (HADOOP-4264) DFSIO is failing on 500 nodes
cluster
[ https://issues.apache.org/jira/browse/HADOOP-4264?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12636099#action_12636099 ]
Suman Sehgal commented on HADOOP-4264:
--------------------------------------
Its giving the same AlreadyBeingCreatedException.
2008-09-26 19:52:18,590 INFO org.apache.hadoop.mapred.TaskInProgress: Error from attempt_200809261929_0005_m_000001_0_1222457384229: Task attempt_200809261929_0005_m_000001_0_1222457384229 failed to report status for 603 seconds. Killing!
2008-09-26 19:52:18,591 INFO org.apache.hadoop.mapred.JobTracker: Removed completed task 'attempt_200809261929_0005_m_000001_0_1222457384229' from 'tracker_host:host/xx.xxx.xx.xxx:xxxxx'
2008-09-26 19:57:24,546 INFO org.apache.hadoop.mapred.TaskInProgress: Error from attempt_200809261929_0005_m_000001_1_1222457384229: org.apache.hadoop.ipc.RemoteException: org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException: failed to create file /benchmarks/TestDFSIO/io_data/test_io_101 for DFSClient_attempt_200809261929_0005_m_000001_1_1222457384229 on client xx.xxx.xx.xxx, because this file is already being created by DFSClient_attempt_200809261929_0005_m_000001_0_1222457384229 on xx.xxx.xx.xxx
> DFSIO is failing on 500 nodes cluster
> -------------------------------------
>
> Key: HADOOP-4264
> URL: https://issues.apache.org/jira/browse/HADOOP-4264
> Project: Hadoop Core
> Issue Type: Bug
> Components: io, test
> Affects Versions: 0.19.0
> Reporter: Suman Sehgal
>
> On executing following command :
> bin/hadoop jar ~/hadoop/hadoop-0.19.0-test.jar TestDFSIO -write -nrFiles 990 -fileSize 320
> This error occurs:
> 08/09/24 06:15:03 INFO mapred.JobClient: map 98% reduce 32%
> java.io.IOException: Job failed!
> at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1201)
> at org.apache.hadoop.fs.TestDFSIO.runIOTest(TestDFSIO.java:236)
> at org.apache.hadoop.fs.TestDFSIO.writeTest(TestDFSIO.java:218)
> at org.apache.hadoop.fs.TestDFSIO.main(TestDFSIO.java:354)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
> at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
> at org.apache.hadoop.test.AllTestDriver.main(AllTestDriver.java:77)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:165)
> at org.apache.hadoop.mapred.JobShell.run(JobShell.java:54)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
> at org.apache.hadoop.mapred.JobShell.main(JobShell.java:68)
> On looking at hadoop logs, It seems that file names are clashing
> 2008-09-24 06:21:41,618 INFO org.apache.hadoop.mapred.JobTracker: Removed completed task 'attempt_200809240600_0005_m_000802_2_1222236048515' from 'tracker_xxxx/client x.x.x.x:xxxxx'
> 2008-09-24 06:21:41,627 INFO org.apache.hadoop.mapred.JobTracker: Adding task 'attempt_200809240600_0005_m_000802_4_1222236048515' to tip task_200809240600_0005_m_000802, for tracker 'tracker_xxxx/client x.x.x.x:xxxxx'
> 2008-09-24 06:21:41,627 INFO org.apache.hadoop.mapred.JobInProgress: Choosing rack-local task task_200809240600_0005_m_000802
> 2008-09-24 06:21:41,724 INFO org.apache.hadoop.mapred.TaskInProgress: Error from attempt_200809240600_0005_m_000900_2_1222236048515: org.apache.hadoop.ipc.RemoteException: org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException: failed to create file /benchmarks/TestDFSIO/io_data/test_io_20 for DFSClient_attempt_200809240600_0005_m_000900_2_1222236048515 on client client x.x.x.x, because this file is already being created by DFSClient_attempt_200809240600_0005_m_000900_0_1222236048515 on client x.x.x.x
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