Qingsheng Ren created FLINK-24277:
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Summary: Offset commit should be disabled if consumer group ID is
not specified in KafkaSource
Key: FLINK-24277
URL: https://issues.apache.org/jira/browse/FLINK-24277
Project: Flink
Issue Type: Bug
Components: Connectors / Kafka
Affects Versions: 1.14.0
Reporter: Qingsheng Ren
Fix For: 1.14.0
FLINK-24051 made "group.id" an optional configuration in KafkaSource. However,
KafkaSource will generate a random group id if user doesn't specify one, and
this random ID is inconsistent after failover, and not even human readable.
A solution will be adding a configuration for offset commit on checkpoint, make
it as true by default, and disable offset commit if group id is not specified.
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