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Posted to dev@kafka.apache.org by "Jason Gustafson (JIRA)" <ji...@apache.org> on 2017/01/24 21:19:26 UTC
[jira] [Created] (KAFKA-4693) Consumer subscription change during
rebalance causes exception
Jason Gustafson created KAFKA-4693:
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Summary: Consumer subscription change during rebalance causes exception
Key: KAFKA-4693
URL: https://issues.apache.org/jira/browse/KAFKA-4693
Project: Kafka
Issue Type: Bug
Reporter: Jason Gustafson
Priority: Minor
Fix For: 0.10.3.0
After every rebalance, the consumer validates that the assignment received contains only partitions from topics that were subscribed. If not, then we raise an exception to the user. It is possible for a wakeup or an interrupt to leave the consumer with a rebalance in progress (e.g. with a JoinGroup to the coordinator in-flight). If the user then changes the topic subscription, then this validation upon completion of the rebalance will fail. We should probably detect the subscription change, eat the exception, and request another rebalance.
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