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From AnilKumar B <akumarb2...@gmail.com>
Subject Re: job failed on hadoop 2
Date Mon, 24 Feb 2014 13:15:08 GMT
Hi Vinay,

Actually when I use multiple outputs with AvroKeyOutputFormat, then I am
facing that issue, I just removed multiple outputs and used general
context.write(), then it's working now.

I need to debug this issue. May some issue in my code.

Thanks for your inputs, I will debug with your suggestions.

Thanks & Regards,
B Anil Kumar.


On Mon, Feb 24, 2014 at 5:28 PM, Vinayakumar B <vinayakumar.b@huawei.com>wrote:

>  Hi Anil,
>
>
>
> I think avro output emitted in reducers is written to same file from
> different tasks?
>
>
>
> Because I am pretty sure that this problem will come only this case.
> Because previous writer is fenced by new writer.
>
>
>
> To findout,
>
>
>
> 1.       Enable hdfs-audit logs for namenode ( if not done )
>
> 2.       Run the job again,
>
> 3.       Try to find out the files written by reducers using the
> hdfs-audit log and find out the exact file which is overwritten before
> closing.
>
>
>
> Regards,
>
> Vinayakumar B
>
>
>
> *From:* AnilKumar B [mailto:akumarb2010@gmail.com]
> *Sent:* 24 February 2014 16:15
> *To:* user@hadoop.apache.org
> *Subject:* Re: job failed on hadoop 2
>
>
>
> Thanks Vinay.
>
>
>
> I am checking my code, but this exception is coming after map 100%. That's
> why I am not getting where could be the issue.
>
>
>
> 14/02/24 02:24:05 INFO mapreduce.Job: Job job_1392973982912_14477 running
> in uber mode : false
>
> 14/02/24 02:24:05 INFO mapreduce.Job:  map 0% reduce 0%
>
> 14/02/24 02:24:14 INFO mapreduce.Job:  map 100% reduce 0%
>
> 14/02/24 02:24:22 INFO mapreduce.Job: Task Id :
> attempt_1392973982912_14477_r_000000_0, Status : FAILED
>
> Error: java.io.FileNotFoundException: ID mismatch. Request id and saved
> id: 731113654 , 731113656
>
>         at
> org.apache.hadoop.hdfs.server.namenode.INodeId.checkId(INodeId.java:53)
>
>
>
>
>
> In my mappers and reducers, I am emitting in avro format.
>
>
>
>
>
>
>  Thanks & Regards,
> B Anil Kumar.
>
>
>
> On Mon, Feb 24, 2014 at 3:35 PM, Vinayakumar B <vinayakumar.b@huawei.com>
> wrote:
>
> Hi Anil,
>
>
>
> I think multiple clients/tasks are trying to write to same file with
> *overwrite* enabled
>
>
>
> Second client is overwriting the first client's file, and first client is
> getting the below mentioned exception.
>
>
>
> Please check ..
>
>
>
> Regards,
>
> Vinayakumar B
>
>
>
> *From:* AnilKumar B [mailto:akumarb2010@gmail.com]
> *Sent:* 24 February 2014 15:32
> *To:* user@hadoop.apache.org
> *Subject:* job failed on hadoop 2
>
>
>
> Hi,
>
>
>
> When I try to run MapReduce job on Hadoop 2, I am facing below issue.
>
>
>
> What could be the problem?
>
>
>
> 14/02/24 02:24:05 INFO mapreduce.Job: Job job_1392973982912_14477 running
> in uber mode : false
>
> 14/02/24 02:24:05 INFO mapreduce.Job:  map 0% reduce 0%
>
> 14/02/24 02:24:14 INFO mapreduce.Job:  map 100% reduce 0%
>
> 14/02/24 02:24:22 INFO mapreduce.Job: Task Id :
> attempt_1392973982912_14477_r_000000_0, Status : FAILED
>
> Error: java.io.FileNotFoundException: ID mismatch. Request id and saved
> id: 731113654 , 731113656
>
>         at
> org.apache.hadoop.hdfs.server.namenode.INodeId.checkId(INodeId.java:53)
>
>         at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:2773)
>
>         at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.analyzeFileState(FSNamesystem.java:2567)
>
>         at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2480)
>
>         at
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:555)
>
>         at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:387)
>
>         at
> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:59582)
>
>         at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:585)
>
>         at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:928)
>
>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2060)
>
>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2056)
>
>         at java.security.AccessController.doPrivileged(Native Method)
>
>         at javax.security.auth.Subject.doAs(Subject.java:396)
>
>         at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1547)
>
>         at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2054)
>
>
>
>         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
>
>         at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
>
>         at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
>
>         at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
>
>         at
> org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:106)
>
>         at
> org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:73)
>
>         at
> org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.locateFollowingBlock(DFSOutputStream.java:1229)
>
>         at
> org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1078)
>
>         at
> org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:514)
>
> Caused by:
> org.apache.hadoop.ipc.RemoteException(java.io.FileNotFoundException): ID
> mismatch. Request id and saved id: 731113654 , 731113656
>
>         at
> org.apache.hadoop.hdfs.server.namenode.INodeId.checkId(INodeId.java:53)
>
>         at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:2773)
>
>         at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.analyzeFileState(FSNamesystem.java:2567)
>
>         at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2480)
>
>         at
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:555)
>
>         at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:387)
>
>         at
> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:59582)
>
>         at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:585)
>
>         at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:928)
>
>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2060)
>
>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2056)
>
>         at java.security.AccessController.doPrivileged(Native Method)
>
>         at javax.security.auth.Subject.doAs(Subject.java:396)
>
>         at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1547)
>
>         at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2054)
>
>
>
>         at org.apache.hadoop.ipc.Client.call(Client.java:1347)
>
>         at org.apache.hadoop.ipc.Client.call(Client.java:1300)
>
>         at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
>
>         at $Proxy10.addBlock(Unknown Source)
>
>         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.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:186)
>
>         at
> org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
>
>         at $Proxy10.addBlock(Unknown Source)
>
>         at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.addBlock(ClientNamenodeProtocolTranslatorPB.java:330)
>
>         at
> org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.locateFollowingBlock(DFSOutputStream.java:1226)
>
>         ... 2 more
>
>
>
>
>
>
>
> Thanks & Regards,
> B Anil Kumar.
>
>
>

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