Hang Ruan created FLINK-24697:
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Summary: Kafka table source cannot change the auto.offset.reset
setting
Key: FLINK-24697
URL: https://issues.apache.org/jira/browse/FLINK-24697
Project: Flink
Issue Type: Improvement
Reporter: Hang Ruan
Because Flink 1.13 SQL does not use the new Source API in FLIP-27, the behavior
to start from group offsets in flink 1.13 will use the kafka
'auto.offset.reset' default value(latest), when the 'auto.offset.reset'
configuration is not set in table options. But in flink 1.13 we could change
the behavior by setting 'auto.offset.reset' to other values. See the method
{{setStartFromGroupOffsets }}under the class {{FlinkKafkaConsumerBase.}}
Flink 1.14 uses the new Source API, but we have no ways to change the default
'auto.offset.reset' value when use 'group-offsets' startup mode. In DataStream
API, we could change it by
`kafkaSourceBuilder.setStartingOffsets(OffsetsInitializer.committedOffsets(OffsetResetStrategy))`.
So we need the way to change auto offset reset configuration.
The design is that when 'auto.offset.reset' is set, the 'group-offsets' startup
mode will use the provided auto offset reset strategy, or else 'none' reset
strategy n order to be consistent with the DataStream API.
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