Hi Hitesh In my code, I did not touch any ObjectRegistry related code. I suspect the instantiation process of ObjectRegistry has problem so that it failed to create an instance when it is called.
I didn't know why PigProcessor collectSample vertex. But looks like it is not a must for TezLocalMode. Chen On Thu, Jun 5, 2014 at 2:59 PM, Chen He <airb...@gmail.com> wrote: > 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 <hit...@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 <airb...@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 >> > >> > >