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https://issues.apache.org/jira/browse/KAFKA-937?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13691998#comment-13691998
]
Alexey Ozeritskiy commented on KAFKA-937:
-----------------------------------------
That patch breaks kafka.tools.ConsumerOffsetChecker:
[2013-06-24 18:11:17,638] INFO Reconnect due to socket error:
(kafka.consumer.SimpleConsumer)
java.nio.channels.ClosedChannelException
at kafka.network.BlockingChannel.send(BlockingChannel.scala:89)
at kafka.consumer.SimpleConsumer.liftedTree1$1(SimpleConsumer.scala:72)
at
kafka.consumer.SimpleConsumer.kafka$consumer$SimpleConsumer$$sendRequest(SimpleConsumer.scala:71)
at
kafka.consumer.SimpleConsumer.getOffsetsBefore(SimpleConsumer.scala:125)
at
kafka.tools.ConsumerOffsetChecker$.kafka$tools$ConsumerOffsetChecker$$processPartition(ConsumerOffsetChecker.scala:72)
at
kafka.tools.ConsumerOffsetChecker$$anonfun$kafka$tools$ConsumerOffsetChecker$$processTopic$1.apply$mcVI$sp(ConsumerOffsetChecker.scala:90)
at
kafka.tools.ConsumerOffsetChecker$$anonfun$kafka$tools$ConsumerOffsetChecker$$processTopic$1.apply(ConsumerOffsetChecker.scala:90)
at
kafka.tools.ConsumerOffsetChecker$$anonfun$kafka$tools$ConsumerOffsetChecker$$processTopic$1.apply(ConsumerOffsetChecker.scala:90)
at
scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)
at
kafka.tools.ConsumerOffsetChecker$.kafka$tools$ConsumerOffsetChecker$$processTopic(ConsumerOffsetChecker.scala:89)
at
kafka.tools.ConsumerOffsetChecker$$anonfun$main$3.apply(ConsumerOffsetChecker.scala:154)
at
kafka.tools.ConsumerOffsetChecker$$anonfun$main$3.apply(ConsumerOffsetChecker.scala:154)
at scala.collection.immutable.List.foreach(List.scala:318)
at
kafka.tools.ConsumerOffsetChecker$.main(ConsumerOffsetChecker.scala:153)
at kafka.tools.ConsumerOffsetChecker.main(ConsumerOffsetChecker.scala)
> ConsumerFetcherThread can deadlock
> ----------------------------------
>
> Key: KAFKA-937
> URL: https://issues.apache.org/jira/browse/KAFKA-937
> Project: Kafka
> Issue Type: Bug
> Components: core
> Affects Versions: 0.8
> Reporter: Jun Rao
> Assignee: Jun Rao
> Fix For: 0.8
>
> Attachments: kafka-937_delta.patch, kafka-937.patch
>
>
> We have the following access pattern that can introduce a deadlock.
> AbstractFetcherThread.processPartitionsWithError() ->
> ConsumerFetcherThread.processPartitionsWithError() ->
> ConsumerFetcherManager.addPartitionsWithError() wait for lock ->
> LeaderFinderThread holding lock while calling
> AbstractFetcherManager.shutdownIdleFetcherThreads() ->
> AbstractFetcherManager calling fetcher.shutdown, which needs to wait until
> AbstractFetcherThread.processPartitionsWithError() completes.
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