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https://issues.apache.org/jira/browse/KAFKA-2626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14967543#comment-14967543
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ASF GitHub Bot commented on KAFKA-2626:
---------------------------------------
Github user ewencp closed the pull request at:
https://github.com/apache/kafka/pull/344
> Null offsets in copycat causes exception in OffsetStorageWriter
> ---------------------------------------------------------------
>
> Key: KAFKA-2626
> URL: https://issues.apache.org/jira/browse/KAFKA-2626
> Project: Kafka
> Issue Type: Sub-task
> Components: copycat
> Reporter: Ewen Cheslack-Postava
> Assignee: Ewen Cheslack-Postava
> Fix For: 0.9.0.0
>
>
> {quote}
> [2015-10-07 16:20:39,052] ERROR CRITICAL: Failed to serialize offset data,
> making it impossible to commit offsets under namespace wikipedia-irc-source.
> This likely won't recover unless the unserializable partition or offset
> information is overwritten.
> (org.apache.kafka.copycat.storage.OffsetStorageWriter:152)
> [2015-10-07 16:20:39,053] ERROR Cause of serialization failure:
> (org.apache.kafka.copycat.storage.OffsetStorageWriter:155)
> java.lang.NullPointerException
> at
> org.apache.kafka.copycat.storage.OffsetUtils.validateFormat(OffsetUtils.java:34)
> at
> org.apache.kafka.copycat.storage.OffsetStorageWriter.doFlush(OffsetStorageWriter.java:141)
> at
> org.apache.kafka.copycat.runtime.WorkerSourceTask.commitOffsets(WorkerSourceTask.java:223)
> at
> org.apache.kafka.copycat.runtime.WorkerSqourceTask.stop(WorkerSourceTask.java:100)
> at org.apache.kafka.copycat.runtime.Worker.stopTask(Worker.java:188)
> at
> org.apache.kafka.copycat.runtime.standalone.StandaloneHerder.removeConnectorTasks(StandaloneHerder.java:210)
> at
> org.apache.kafka.copycat.runtime.standalone.StandaloneHerder.stopConnector(StandaloneHerder.java:155)
> at
> org.apache.kafka.copycat.runtime.standalone.StandaloneHerder.stop(StandaloneHerder.java:60)
> at org.apache.kafka.copycat.runtime.Copycat.stop(Copycat.java:66)
> at
> org.apache.kafka.copycat.runtime.Copycat$ShutdownHook.run(Copycat.java:88)
> [2015-10-07 16:20:39,055] ERROR Failed to flush
> org.apache.kafka.copycat.runtime.WorkerSourceTask$2@12782f6 offsets to
> storage: (org.apache.kafka.copycat.runtime.WorkerSourceTask:227)
> java.lang.NullPointerException
> at
> org.apache.kafka.copycat.storage.OffsetUtils.validateFormat(OffsetUtils.java:34)
> at
> org.apache.kafka.copycat.storage.OffsetStorageWriter.doFlush(OffsetStorageWriter.java:141)
> at
> org.apache.kafka.copycat.runtime.WorkerSourceTask.commitOffsets(WorkerSourceTask.java:223)
> at
> org.apache.kafka.copycat.runtime.WorkerSourceTask.stop(WorkerSourceTask.java:100)
> at org.apache.kafka.copycat.runtime.Worker.stopTask(Worker.java:188)
> at
> org.apache.kafka.copycat.runtime.standalone.StandaloneHerder.removeConnectorTasks(StandaloneHerder.java:210)
> at
> org.apache.kafka.copycat.runtime.standalone.StandaloneHerder.stopConnector(StandaloneHerder.java:155)
> at
> org.apache.kafka.copycat.runtime.standalone.StandaloneHerder.stop(StandaloneHerder.java:60)
> at org.apache.kafka.copycat.runtime.Copycat.stop(Copycat.java:66)
> at
> org.apache.kafka.copycat.runtime.Copycat$ShutdownHook.run(Copycat.java:88)
> [2015-10-07 16:20:39,055] INFO Starting graceful shutdown of thread
> WorkerSourceTask-wikipedia-irc-source-0
> (org.apache.kafka.copycat.util.ShutdownableThread:119)
> [2015-10-07 16:20:39,056] INFO Herder stopped
> (org.apache.kafka.copycat.runtime.standalone.StandaloneHerder:64)
> [2015-10-07 16:20:39,056] INFO Worker stopping
> (org.apache.kafka.copycat.runtime.Worker:104)
> [2015-10-07 16:20:39,056] INFO Stopped FileOffsetBackingStore
> (org.apache.kafka.copycat.storage.FileOffsetBackingStore:61)
> [2015-10-07 16:20:39,056] INFO Worker stopped
> (org.apache.kafka.copycat.runtime.Worker:133)
> [2015-10-07 16:20:39,057] INFO Copycat stopped
> (org.apache.kafka.copycat.runtime.Copycat:69)
> {quote}
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