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https://issues.apache.org/jira/browse/FLINK-15202?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17328158#comment-17328158
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Flink Jira Bot commented on FLINK-15202:
----------------------------------------

This major issue is unassigned and itself and all of its Sub-Tasks have not 
been updated for 30 days. So, it has been labeled "stale-major". If this ticket 
is indeed "major", please either assign yourself or give an update. Afterwards, 
please remove the label. In 7 days the issue will be deprioritized.

> Increment metric when Interval Join record is late
> --------------------------------------------------
>
>                 Key: FLINK-15202
>                 URL: https://issues.apache.org/jira/browse/FLINK-15202
>             Project: Flink
>          Issue Type: Improvement
>          Components: API / DataStream
>            Reporter: Chris Gillespie
>            Priority: Major
>              Labels: stale-major
>
> Currently an interval join will silently drop late records. I think it would 
> be quite useful to have the metric *numLateRecordsDropped* incremented when 
> this happens. Window Join already does this, so it would make sense to have 
> it happen for both types of joins.
> Mailing List Idea: 
> [https://lists.apache.org/thread.html/f463d81db3777a529d1764723189a57c33d601a6c142441fb5036ff9%40%3Cuser.flink.apache.org%3E]
> Window Join:
>  
> [https://github.com/apache/flink/blob/master/flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/operators/windowing/WindowOperator.java#L424]
> Interval Join:
> [https://github.com/apache/flink/blob/master/flink-streaming-java/src/main/java/org/apache/flink/streaming/api/operators/co/IntervalJoinOperator.java#L222]



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