Jun Rao created KAFKA-937:
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Summary: 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
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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