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From alo alt <wget.n...@googlemail.com>
Subject Re: tasktracker keep recevied KillJobAction and then delete unknown job while using hive
Date Wed, 01 Feb 2012 11:53:56 GMT
How much namenode handler (dfs.namenode.handler.count) you have defined for your cluster?

- Alex

--
Alexander Lorenz
http://mapredit.blogspot.com

On Feb 1, 2012, at 12:25 PM, Xiaobin She wrote:

> 
> hi Alex,
> 
> I'm using jre 1.6.0_24
> 
> with hadoop 0.20.0
> hive 0.80
> 
> thx
> 
> 
> 2012/2/1 alo alt <wget.null@googlemail.com>
> Hi,
> 
> + hdfs-user (bcc'd)
> 
> which jre version u use?
> 
> - Alex
> 
> --
> Alexander Lorenz
> http://mapredit.blogspot.com
> 
> On Feb 1, 2012, at 8:16 AM, Xiaobin She wrote:
> 
>> hi ,
>> 
>> 
>> I'm using hive to do some log analysis, and I have encountered a problem.
>> 
>> My cluster have 3 nodes, one for NameNode/JobTracker and the other two for DataNode/TaskTracker
>> 
>> One of the tasktracker will repeatedly receive KillJobAction and then delete unknown
jobs
>> 
>> the logs look like:
>> 
>> 2012-01-31 00:35:37,640 INFO org.apache.hadoop.mapred.TaskTracker: Received 'KillJobAction'
for job: job_201201301055_0381
>> 2012-01-31 00:35:37,640 WARN org.apache.hadoop.mapred.TaskTracker: Unknown job job_201201301055_0381
being deleted.
>> 2012-01-31 00:36:22,697 INFO org.apache.hadoop.mapred.TaskTracker: Received 'KillJobAction'
for job: job_201201301055_0383
>> 2012-01-31 00:36:22,698 WARN org.apache.hadoop.mapred.TaskTracker: Unknown job job_201201301055_0383
being deleted.
>> 2012-01-31 01:05:34,108 INFO org.apache.hadoop.mapred.TaskTracker: Received 'KillJobAction'
for job: job_201201301055_0384
>> 2012-01-31 01:05:34,108 WARN org.apache.hadoop.mapred.TaskTracker: Unknown job job_201201301055_0384
being deleted.
>> 2012-01-31 01:07:43,280 INFO org.apache.hadoop.mapred.TaskTracker: Received 'KillJobAction'
for job: job_201201301055_0385
>> 2012-01-31 01:07:43,280 WARN org.apache.hadoop.mapred.TaskTracker: Unknown job job_201201301055_0385
being deleted.
>> 
>> this happens occasionally, and if this happens, this tasktracker will do notghing
but keep receiveing KillJobAction and delete unknown job, and thus the performance will drop
down.
>> 
>> to solve this problem, I have to restart the cluster.
>> but obviously, this is not a good solution.
>> 
>> these jobs eventually will be run on the other tasktracker, and they will run well,
the job will success.
>> 
>> has anybody have encountered this problem and give me some advices?
>> 
>> and occasionally there will be some errlog like:
>> 
>> 2012-01-31 13:11:40,183 INFO org.apache.hadoop.ipc.Server: IPC Server listener on
55837: readAndProcess threw exception java.io.IOException: Connection reset by peer. Count
of bytes read: 0
>> java.io.IOException: Connection reset by peer
>>        at sun.nio.ch.FileDispatcher.read0(Native Method)
>>        at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:21)
>>        at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:202)
>>        at sun.nio.ch.IOUtil.read(IOUtil.java:175)
>>        at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:243)
>>        at org.apache.hadoop.ipc.Server.channelRead(Server.java:1211)
>>        at org.apache.hadoop.ipc.Server.access$2300(Server.java:77)
>>        at org.apache.hadoop.ipc.Server$Connection.readAndProcess(Server.java:799)
>>        at org.apache.hadoop.ipc.Server$Listener.doRead(Server.java:419)
>>        at org.apache.hadoop.ipc.Server$Listener.run(Server.java:328)
>> 2012-01-31 13:11:40,211 INFO org.apache.hadoop.mapred.JvmManager: JVM : jvm_201201311041_0071_r_-1096994286
exited. Number of tasks it ran: 0
>> 2012-01-31 13:11:40,214 INFO org.apache.hadoop.mapred.TaskTracker: Killing unknown
JVM jvm_201201311041_0071_r_-386575334
>> 2012-01-31 13:11:40,221 INFO org.apache.hadoop.ipc.Server: IPC Server listener on
55837: readAndProcess threw exception java.io.IOException: Connection reset by peer. Count
of bytes read: 0
>> java.io.IOException: Connection reset by peer
>>        at sun.nio.ch.FileDispatcher.read0(Native Method)
>>        at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:21)
>>        at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:202)
>>        at sun.nio.ch.IOUtil.read(IOUtil.java:175)
>>        at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:243)
>>        at org.apache.hadoop.ipc.Server.channelRead(Server.java:1211)
>>        at org.apache.hadoop.ipc.Server.access$2300(Server.java:77)
>>        at org.apache.hadoop.ipc.Server$Connection.readAndProcess(Server.java:799)
>>        at org.apache.hadoop.ipc.Server$Listener.doRead(Server.java:419)
>>        at org.apache.hadoop.ipc.Server$Listener.run(Server.java:328)
>> 
>> Is there some connections between these two errors?
>> 
>> thank you very much!
>> 
>> xiaobin
> 
> 


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