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From Chen He <airb...@gmail.com>
Subject Re: meet a problem when using "pig -x tez_local"
Date Thu, 05 Jun 2014 19:59:13 GMT
Hi Hitesh

Yes, objectRegistry returns NPE. I saw it is a inject static variable.

Regards!

Chen


On Thu, Jun 5, 2014 at 9:15 AM, Hitesh Shah <hitesh@apache.org> wrote:

> @Chen, this might be a bug in the tez local execution code. Can you confirm
> that ObjectRegistryFactory::getObjectRegistry returns a non-null value?
>
> thanks
> — Hitesh
>
>
> On Wed, Jun 4, 2014 at 4:21 PM, Chen He <airbots@gmail.com> wrote:
>
> > I am using pig -x tez_local to test tez local mode and met following
> > problems (use tutorial.jar)
> >
> > 2014-06-03 11:06:35,964 [pool-1-thread-1] INFO
> > org.apache.hadoop.mapred.YarnTezDagChild - Running task,
> > taskAttemptId=attempt_1401811588093_0000_1_05_000000_0
> > 2014-06-03 11:06:35,965 [pool-1-thread-1] ERROR
> > org.apache.pig.backend.hadoop.executionengine.tez.PigProcessor -
> > Encountered exception while processing:
> > java.lang.NullPointerException
> >         at
> >
> >
> org.apache.pig.backend.hadoop.executionengine.tez.ObjectCache.retrieve(ObjectCache.java:47)
> >         at
> >
> >
> org.apache.pig.backend.hadoop.executionengine.tez.PigProcessor.collectSample(PigProcessor.java:307)
> >         at
> >
> >
> org.apache.pig.backend.hadoop.executionengine.tez.PigProcessor.initializeInputs(PigProcessor.java:218)
> >         at
> >
> >
> org.apache.pig.backend.hadoop.executionengine.tez.PigProcessor.run(PigProcessor.java:162)
> >         at
> >
> >
> org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.run(LogicalIOProcessorRuntimeTask.java:317)
> >         at
> > org.apache.hadoop.mapred.YarnTezDagChild$3.run(YarnTezDagChild.java:602)
> >         at java.security.AccessController.doPrivileged(Native Method)
> >         at javax.security.auth.Subject.doAs(Subject.java:415)
> >         at
> >
> >
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
> >         at
> >
> org.apache.hadoop.mapred.YarnTezDagChild.pollTask(YarnTezDagChild.java:591)
> >         at
> >
> org.apache.hadoop.mapred.YarnTezDagChild.runTask(YarnTezDagChild.java:332)
> >         at
> >
> >
> org.apache.tez.dag.app.launcher.LocalContainerLauncher$1.run(LocalContainerLauncher.java:250)
> >         at java.lang.Thread.run(Thread.java:744)
> >         at
> >
> >
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> >         at
> >
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> >         at java.lang.Thread.run(Thread.java:744)
> >
> > code checking implies that the ObjectCache is trying to get something
> from
> > a Map but it is not there.
> > But what is the purpose of using ObjectCache in PIG on TEZ?
> > Why pig needs sampleVertex in the PigProcessor?
> >
> > Any reply will be appreciated.
> >
> > Regards!
> >
> > Chen
> >
>

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