[jira] [Created] (FLINK-24697) Kafka table source cannot change the auto.offset.reset setting

["Hang Ruan (Jira)" <ji...@apache.org>]

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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