pig-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Daniel Dai <da...@hortonworks.com>
Subject Re: meet a problem when using "pig -x tez_local"
Date Wed, 04 Jun 2014 03:00:30 GMT
This is the sample used by Order by and Skewed Join. It is supposed to
retrieve from input edge the first time and cached into ObjectCache.
The code to cache it is in
WeightedRangePartitionerTez/SkewedPartitionerTez, and later
PigProcessor.collectSample will get it directly from ObjectCache.

On Tue, Jun 3, 2014 at 12:24 PM, Chen He <airbots@gmail.com> wrote:
> 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?
>
>
> On Tue, Jun 3, 2014 at 1:50 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)
>>
>>
>> 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. If the reader 
of this message is not the intended recipient, you are hereby notified that 
any printing, copying, dissemination, distribution, disclosure or 
forwarding of this communication is strictly prohibited. If you have 
received this communication in error, please contact the sender immediately 
and delete it from your system. Thank You.

Mime
View raw message