Thank you for the reply, Daniel. I will check tomorrow. Actually, i just use tutorial script1-local.
Regards! Chen On Jun 5, 2014 11:42 PM, "Daniel Dai" <da...@hortonworks.com> wrote: > Hi, Chen, > Are you seeing this issue only when running a query containing "order > by"? It seems a Pig bug on this side, I can take a look tomorrow. But > in worst case, we can disable ObjectRegistry in local mode. > > Thanks, > Daniel > > On Thu, Jun 5, 2014 at 9:14 PM, Chen He <airb...@gmail.com> wrote: > > Hi Hitesh > > > > ObjectRegistry is used for broadcastShuffle. If a vertex has more than > one > > task. Pig uses ObjectRegistry to save objects that can be used for all > > tasks in a vertex. The ObjectRegistryImpl's annotation is singleton. I > > suspect it is a race condition between constructor and caller. > > > > Regards! > > > > Chen > > > > > > On Thu, Jun 5, 2014 at 8:49 PM, Hitesh Shah <hit...@apache.org> wrote: > > > >> @Chen, I am not sure asking for the user code to change is an option. We > >> should address the underlying issue which is fixing ObjectRegistry to > work > >> in local mode. > >> > >> thanks > >> -- Hitesh > >> > >> > >> On Thu, Jun 5, 2014 at 1:34 PM, Chen He <airb...@gmail.com> wrote: > >> > >> > 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 > >> > >> > > >> > >> > >> > > > >> > > > >> > > >> > > -- > CONFIDENTIALITY NOTICE > NOTICE: This message is intended for the use of the individual or entity to > which it is addressed and may contain information that is confidential, > privileged and exempt from disclosure under applicable law. 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