Seweryn Habdank-Wojewodzki created KAFKA-5786:
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Summary: Yet another exception is causing that streamming app is
zombie
Key: KAFKA-5786
URL: https://issues.apache.org/jira/browse/KAFKA-5786
Project: Kafka
Issue Type: Bug
Reporter: Seweryn Habdank-Wojewodzki
Priority: Critical
Not handled exception in streamming app causes zombie state of the process.
{code}
2017-08-24 15:17:40 WARN StreamThread:978 - stream-thread
[kafka-endpoint-1236e6d5-75f0-4c14-b025-78e632484a26-StreamThread-3] Unexpected
state transition from RUNNING to DEAD.
2017-08-24 15:17:40 FATAL StreamProcessor:67 - Caught unhandled exception:
stream-thread
[kafka-endpoint-1236e6d5-75f0-4c14-b025-78e632484a26-StreamThread-3] Failed to
rebalance.;
[org.apache.kafka.streams.processor.internals.StreamThread.pollRequests(StreamThread.java:589),
org.apache.kafka.streams.processor.internals.StreamThread.runLoop(StreamThread.java:553),
org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:527)]
in thread kafka-endpoint-1236e6d5-75f0-4c14-b025-78e632484a26-StreamThread-3
{code}
The final state of the app is similar to KAFKA-5779, but the exception and its
location is in different place.
The exception shall be handled in the way that either application tries to
continue working or shall completely quit if the error is not recoverable.
Current situation when application is zombie is not good.
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