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https://issues.apache.org/jira/browse/KAFKA-6349?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Damian Guy reassigned KAFKA-6349:
---------------------------------
Assignee: Damian Guy
> ConcurrentModificationException during streams state restoration
> ----------------------------------------------------------------
>
> Key: KAFKA-6349
> URL: https://issues.apache.org/jira/browse/KAFKA-6349
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 1.1.0
> Reporter: Damian Guy
> Assignee: Damian Guy
> Priority: Blocker
> Fix For: 1.1.0
>
> Attachments: streams-error.log
>
>
> During application startup and state restoration a
> {{ConcurrentModificationException}} was thrown from {{AbstractStateManager}}
> {code}
> [2017-12-12 10:47:09,840] ERROR [streams-saak-test-client-StreamThread-2]
> stream-thread [streams-saak-test-client-StreamThread-2] Encountered the
> following error during processing:
> (org.apache.kafka.streams.processor.internals.StreamThread)
> java.util.ConcurrentModificationException
> at
> java.util.LinkedHashMap$LinkedHashIterator.nextNode(LinkedHashMap.java:719)
> at
> java.util.LinkedHashMap$LinkedEntryIterator.next(LinkedHashMap.java:752)
> at
> java.util.LinkedHashMap$LinkedEntryIterator.next(LinkedHashMap.java:750)
> at
> org.apache.kafka.streams.processor.internals.AbstractStateManager.reinitializeStateStoresForPartitions(AbstractStateManager.java:74)
> at
> org.apache.kafka.streams.processor.internals.ProcessorStateManager.reinitializeStateStoresForPartitions(ProcessorStateManager.java:155)
> at
> org.apache.kafka.streams.processor.internals.AbstractTask.reinitializeStateStoresForPartitions(AbstractTask.java:229)
> at
> org.apache.kafka.streams.processor.internals.StoreChangelogReader.restore(StoreChangelogReader.java:94)
> at
> org.apache.kafka.streams.processor.internals.TaskManager.updateNewAndRestoringTasks(TaskManager.java:325)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.runOnce(StreamThread.java:779)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.runLoop(StreamThread.java:750)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:720)
> {code}
> The root cause is due to an {{OffsetOutOfRangeException}} that causes the
> store to be re-initialized:
> {code}
> [2017-12-12 10:46:04,861] WARN [streams-saak-test-client-StreamThread-2]
> stream-thread [streams-saak-test-client-StreamThread-2] Restoring StreamTasks
> failed. Deleting StreamTasks stores to recreate from scratch.
> (org.apache.kafka.streams.processor.internals.StoreChangelogReader)
> org.apache.kafka.clients.consumer.OffsetOutOfRangeException: Offsets out of
> range with no configured reset policy for partitions:
> {streams-soak-test-app-KSTREAM-AGGREGATE-STATE-STORE-0000000048-changelog-9=0}
> at
> org.apache.kafka.clients.consumer.internals.Fetcher.parseCompletedFetch(Fetcher.java:883)
> at
> org.apache.kafka.clients.consumer.internals.Fetcher.fetchedRecords(Fetcher.java:528)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.pollOnce(KafkaConsumer.java:1173)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1106)
> at
> org.apache.kafka.streams.processor.internals.StoreChangelogReader.restore(StoreChangelogReader.java:84)
> at
> org.apache.kafka.streams.processor.internals.TaskManager.updateNewAndRestoringTasks(TaskManager.java:325)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.runOnce(StreamThread.java:789)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.runLoop(StreamThread.java:750)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:720)
> {code}
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