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From Rick Mangi <r...@chartbeat.com>
Subject Re: Sporadic errors in JobRunner
Date Wed, 18 Nov 2015 20:36:23 GMT
I seem to have solved it by only specifying a single zookeeper node in my job config. Maybe
a race condition of some sort?


> On Nov 18, 2015, at 2:37 PM, Yi Pan <nickpan47@gmail.com> wrote:
> 
> Hi, Rick,
> 
> I think that you are running into SAMZA-754. I have a RB available for it
> already. I will upload the patch and it would be good if you can try the
> patch to see whether that solves your problem.
> 
> -Yi
> 
> On Tue, Nov 17, 2015 at 12:01 PM, Rick Mangi <rick@chartbeat.com> wrote:
> 
>> Hi, getting things working on samza 0.10.0 finally :)
>> 
>> I’m seeing the following error about 1/4 of the time from run-job.sh when
>> starting jobs:
>> 
>> [yarnmaster01] out: 2015-11-17 14:56:00 KafkaSystemAdmin$ [INFO] Got
>> metadata: Map(__samza_coordinator_t-key-grouper_dev -> SystemStreamMetadata
>> [streamName=__samza_coordinator_t-key-grouper_dev,
>> partitionMetadata={Partition [partition=0]=SystemStreamPartitionMetadata
>> [oldestOffset=null, newestOffset=null, upcomingOffset=0]}])
>> [yarnmaster01] out: Exception in thread "main"
>> java.lang.NullPointerException
>> [yarnmaster01] out:     at
>> java.util.concurrent.ConcurrentHashMap.put(ConcurrentHashMap.java:1124)
>> [yarnmaster01] out:     at
>> scala.collection.convert.Wrappers$JMapWrapperLike$class.update(Wrappers.scala:257)
>> [yarnmaster01] out:     at
>> scala.collection.convert.Wrappers$JConcurrentMapWrapper.update(Wrappers.scala:348)
>> [yarnmaster01] out:     at
>> scala.collection.mutable.MapLike$class.getOrElseUpdate(MapLike.scala:189)
>> [yarnmaster01] out:     at
>> scala.collection.mutable.AbstractMap.getOrElseUpdate(Map.scala:91)
>> [yarnmaster01] out:     at
>> org.apache.samza.system.kafka.KafkaSystemConsumer.register(KafkaSystemConsumer.scala:108)
>> [yarnmaster01] out:     at
>> org.apache.samza.coordinator.stream.CoordinatorStreamSystemConsumer.register(CoordinatorStreamSystemConsumer.java:112)
>> [yarnmaster01] out:     at
>> org.apache.samza.job.JobRunner.run(JobRunner.scala:88)
>> [yarnmaster01] out:     at
>> org.apache.samza.job.JobRunner$.main(JobRunner.scala:43)
>> [yarnmaster01] out:     at
>> org.apache.samza.job.JobRunner.main(JobRunner.scala)
>> [yarnmaster01] out:
>> 
>> 
>> The same job will startup fine a minute later.
>> 


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