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https://issues.apache.org/jira/browse/FLINK-28516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17937537#comment-17937537
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Poorvank Bhatia commented on FLINK-28516:
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Hey [~chesnay] is this being worked upon. If not I can pick this up. Thanks.
> UI is misleading when source doesn't emit watermark due to misconfigured
> idleness
> ---------------------------------------------------------------------------------
>
> Key: FLINK-28516
> URL: https://issues.apache.org/jira/browse/FLINK-28516
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Common, Runtime / Web Frontend
> Affects Versions: 2.1.0
> Reporter: Chesnay Schepler
> Priority: Major
> Fix For: 2.1.0
>
>
> When a source is not emitting watermarks because one of the readers is idle,
> without idleness being set up, then the UI display this in the watermarks tab:
> {code:java}
> No Watermark (Watermarks are only available if EventTime is used) {code}
> My immediate interpretation was that event time was not used by my job. I
> understand the intention behind the event time remark, but it reads to much
> as a reason as to why there is no watermark in the current job.
> This could be improved by either storing a flag in the job graph for whether
> event time is properly set up, or enhancing the watermarks tab to also show
> output watermarks for sources.
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