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https://issues.apache.org/jira/browse/FLINK-7611?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16164008#comment-16164008
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aitozi commented on FLINK-7611:
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i have add the pr, https://github.com/apache/flink/pull/4665 , anyone care
about this issue can comment on this, thank you .
> add metrics to measure the data drop by watermark
> -------------------------------------------------
>
> Key: FLINK-7611
> URL: https://issues.apache.org/jira/browse/FLINK-7611
> Project: Flink
> Issue Type: Improvement
> Components: Metrics
> Affects Versions: 1.2.0, 1.3.0
> Reporter: aitozi
> Priority: Minor
> Labels: patch
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> when use the window operator with event time, the data come after the
> window.endtime + allowLatency, the data will be droped, but there is no
> existed metrics to measure the num of dropped data, and this value will help
> to set the correct allowLatency
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