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HDFS >> mail # user >> Error on running a hadoop job


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jamal sasha 2013-07-29, 17:59
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Re: Error on running a hadoop job
I'm getting the exact same error. Only thing is I'm trying to write to a
sequence file.

Regards,
Pavan
On Jul 29, 2013 11:29 PM, "jamal sasha" <[EMAIL PROTECTED]> wrote:

> Hi,
>  I am getting a weird error?
>
> 13/07/29 10:50:58 INFO mapred.JobClient: Task Id :
> attempt_201307102216_0145_r_000016_0, Status : FAILED
> org.apache.hadoop.ipc.RemoteException:
> org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException: No lease on
> /wordcount_raw/_temporary/_attempt_201307102216_0145_r_000016_0/part-r-00016
> File does not exist. Holder DFSClient_attempt_201307102216_0145_r_000016_0
> does not have any open files.
>  at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:1629)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:1620)
>  at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1536)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:696)
>  at sun.reflect.GeneratedMethodAccessor16.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>  at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:563)
>  at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1388)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1384)
>  at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:396)
>  at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1093)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1382)
>
> at org.apache.hadoop.ipc.Client.call(Client.java:1066)
> at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:225)
>  at $Proxy2.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:82)
> at
> org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
>  at $Proxy2.addBlock(Unknown Source)
> at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:3507)
>  at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:3370)
> at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2700(DFSClient.java:2586)
>  at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2826)
>
> I am guessing that it is because in the intermediate step (after map
> phase) , there were some temp files which might have got deleted while
> reducer is trying to read it.?
> How do i resolve this.
> I am trying to run a simple word count example but on complete wiki dump?
> Thanks
>
>
>
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Harsh J 2013-07-29, 18:19