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https://issues.apache.org/jira/browse/FLINK-23808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17403814#comment-17403814
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Piotr Nowojski commented on FLINK-23808:
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{quote}
like WatermarkAssignerOperator, which might cause problems.
{quote}
[~gaoyunhaii], can you elaborate what problems did you mean? I presume this was
discovered by our WIP ITCase?
> Bypass operators when advanceToEndOfEventTime for both legacy and new source
> tasks
> ----------------------------------------------------------------------------------
>
> Key: FLINK-23808
> URL: https://issues.apache.org/jira/browse/FLINK-23808
> Project: Flink
> Issue Type: Sub-task
> Affects Versions: 1.14.0
> Reporter: Yun Gao
> Assignee: Yun Gao
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.14.0
>
>
> Currently when end of data processing, the sources would advance to max
> watermark and emit MAX_WATERMARK. However, currently the output used is the
> mainOperatorOutput, namely the output of the source operator. If the source
> operator is chained with other operators and the tasks are finished on
> restore, there would be problems since the following operators should be
> skipped, but some operators still have actions when the watermark is
> advanced, like WatermarkAssignerOperator, which might cause problems.
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