Matthias J. Sax created KAFKA-6906:
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Summary: Kafka Streams does not commit transactions if data is
produced via wall-clock punctuation
Key: KAFKA-6906
URL: https://issues.apache.org/jira/browse/KAFKA-6906
Project: Kafka
Issue Type: Bug
Components: streams
Affects Versions: 1.1.0
Reporter: Matthias J. Sax
Committing in Kafka Streams happens in regular intervals. However, committing
only happens if new input records got processed since the last commit (via
setting flag `commitOffsetNeeded` within `StreamTask#process()`)
However, data could also be emitted via wall-clock based punctuation calls.
Especially if EOS is enabled, this is an issue (maybe also for non-EOS) because
the current running transaction is not committed and thus might time out
leading to a fatal error.
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