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https://issues.apache.org/jira/browse/SAMZA-802?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Yi Pan (Data Infrastructure) reassigned SAMZA-802:
--------------------------------------------------
Assignee: Yi Pan (Data Infrastructure) (was: Aleksandar Pejakovic)
> KafkaSystemAdmin needs to handle empty topic offsets
> ----------------------------------------------------
>
> Key: SAMZA-802
> URL: https://issues.apache.org/jira/browse/SAMZA-802
> Project: Samza
> Issue Type: Bug
> Reporter: Yi Pan (Data Infrastructure)
> Assignee: Yi Pan (Data Infrastructure)
> Attachments: SAMZA-802.0.patch
>
>
> We have encountered multiple times in NullPointerException in
> KafkaSystemAdmin when the topic is empty:
> {code}
> 2015-10-19 18:21:03 KafkaSystemAdmin$ [INFO] Got metadata:
> Map(__samza_coordinator_employment-online-ingestion_i001 ->
> SystemStreamMetadata
> [streamName=__samza_coordinator_employment-online-ingestion_i001,
> partitionMetadata={Partition [partition=0]=SystemStreamPartitionMetadata
> [oldestOffset=null, newestOffset=null, upcomingOffset=0]}])
> Exception in thread "main" java.lang.NullPointerException
> at
> java.util.concurrent.ConcurrentHashMap.putVal(ConcurrentHashMap.java:1011)
> at
> java.util.concurrent.ConcurrentHashMap.put(ConcurrentHashMap.java:1006)
> at
> scala.collection.convert.Wrappers$JMapWrapperLike$class.update(Wrappers.scala:257)
> at
> scala.collection.convert.Wrappers$JConcurrentMapWrapper.update(Wrappers.scala:348)
> at
> scala.collection.mutable.MapLike$class.getOrElseUpdate(MapLike.scala:189)
> at scala.collection.mutable.AbstractMap.getOrElseUpdate(Map.scala:91)
> at
> org.apache.samza.system.kafka.KafkaSystemConsumer.register(KafkaSystemConsumer.scala:108)
> at
> org.apache.samza.coordinator.stream.CoordinatorStreamSystemConsumer.register(CoordinatorStreamSystemConsumer.java:112)
> at org.apache.samza.job.JobRunner.run(JobRunner.scala:111)
> at org.apache.samza.job.JobRunner$.main(JobRunner.scala:66)
> at org.apache.samza.job.JobRunner.main(JobRunner.scala)
> {code}
> KafkaSystemAdmin needs to handle this case.
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