Vicky Papavasileiou created KAFKA-14294:
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Summary: Kafka Streams should commit transaction even no records
are processed
Key: KAFKA-14294
URL: https://issues.apache.org/jira/browse/KAFKA-14294
Project: Kafka
Issue Type: Improvement
Components: streams
Reporter: Vicky Papavasileiou
Currently, if there are no records to process in the input topic, a transaction
does not commit. If a custom punctuator code is writing to a state store (which
is common practice) the producer gets fenced when trying to write to the
changelog topic. This throws a TaskMigratedException and causes a rebalance.
A better approach would be to commit a transaction even when there are no
records processed as to allow the punctuator to make progress.
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