Jason Gustafson created KAFKA-9600:
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Summary: EndTxn handler should check strict epoch equality
Key: KAFKA-9600
URL: https://issues.apache.org/jira/browse/KAFKA-9600
Project: Kafka
Issue Type: Bug
Reporter: Jason Gustafson
The EndTxn path in TransactionCoordinator is shared between direct calls to
EndTxn from the client and internal transaction abort logic. To support the
latter, the code is written to allow an epoch bump. However, if the client
bumps the epoch unexpectedly (e.g. due to a buggy implementation), then we can
be left with a hanging transaction. To fix this, we should ensure that an
EndTxn from the client checks for strict epoch equality.
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