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https://issues.apache.org/jira/browse/FLINK-21165?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chesnay Schepler updated FLINK-21165:
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Component/s: (was: Client / Job Submission)
API / DataStream
> Timestamps/Watermarks chained erroneously with previous operator
> ----------------------------------------------------------------
>
> Key: FLINK-21165
> URL: https://issues.apache.org/jira/browse/FLINK-21165
> Project: Flink
> Issue Type: Bug
> Components: API / DataStream
> Affects Versions: 1.12.0, 1.11.1
> Reporter: zlzhang0122
> Priority: Major
> Attachments: Lark20210127-203541.png
>
>
> When using assignTimestampAndWatermarks function separately, if it can
> satisfied the chaining condition, it will chained erroneously with previous
> operator.
> For example, I have a code like bellow:
> {code:java}
> // code placeholder
> DataStream<UserAction> ds = dataSource.map(xxx).setParallelism(1);
> ds.assignTimestampAndWatermarks(xxxx);
> DataStream<UserAction> rsStream =
> ds.keyBy(xxx).timeWindow(xxx).sum(xxx).setParallelism(2);{code}
> I will get the JobGraph bellow.
> !Lark20210127-203541.png!
> If I change my code to this:
> {code:java}
> // code placeholder
> DataStream<UserAction> ds = dataSource.map(xxx).setParallelism(1);
> DataStream<UserAction> watermarkStream =
> ds.assignTimestampAndWatermarks(xxxx);
> DataStream<UserAction> rsStream =
> watermarkStream.keyBy(xxx).timeWindow(xxx).sum(xxx).setParallelism(2);
> {code}
> I will get the same JobGraph, at the same time the actual execution result is
> not the same.
> I think the first JobGraph have some problem and should not show like that,
> maybe the Timestamps/Watermarks operator should show separately and should
> not chaining with previous operator.
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