Matthias J. Sax created KAFKA-9776:
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Summary: Producer should automatically downgrade CommitTxRequest
Key: KAFKA-9776
URL: https://issues.apache.org/jira/browse/KAFKA-9776
Project: Kafka
Issue Type: Improvement
Components: producer
Affects Versions: 2.5.0
Reporter: Matthias J. Sax
When using transactions with a 2.5 producer against 2.4 (or older) brokers, it
is not possible to call `producer.commitTransaction(...,
ConsumerGroupMetadata)` but only the old API `producer.commitTransaction(...,
String applicationId)` is supported.
This implies that a developer needs to know the broker version when writing an
application or write additional code to call the one or the other API depending
on the broker version (the developer would need to write code to figure out the
broker version, too).
We should change the producer to automatically downgrade to the older
CommitTxRequest if `commitTransaction(..., ConsumerGroupMetadata)` is used
against older brokers to avoid an `UnsupportedVersionException`.
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