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https://issues.apache.org/jira/browse/KAFKA-937?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jun Rao updated KAFKA-937:
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Attachment: kafka-937_delta.patch
Just realize a rare corner case issue. addFetcher() may call
ConsumerFetcherThread.handleOffsetOutOfRange() and can get an exception from
SimpleConsumer.earliestOrLatestOffset(). In this case, we shouldn't kill the
leaderFinderThread unless it is shut down. Attach a patch.
> 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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