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Posted to issues@flink.apache.org by "shiwuliang (JIRA)" <ji...@apache.org> on 2019/04/23 08:43:00 UTC

[jira] [Created] (FLINK-12299) ExecutionConfig#setAutoWatermarkInterval should check param(interval should not less than zero)

shiwuliang created FLINK-12299:
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             Summary: ExecutionConfig#setAutoWatermarkInterval should check param(interval should not less than zero)
                 Key: FLINK-12299
                 URL: https://issues.apache.org/jira/browse/FLINK-12299
             Project: Flink
          Issue Type: Improvement
            Reporter: shiwuliang


In any scenario, `autoWatermarkInterval` should not be less than or equal to zero.

First of all, this does not correspond to the meaning of `autoWatermarkInterval`.

Second, in the case where `autoWatermarkInterval` is less than 0, we will not be able to register ourselves in `TimestampsAndPeriodicWatermarksOperator#open`, which will result in the water level of this stream being kept at the lowest level.



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