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Posted to issues@flink.apache.org by "vinoyang (JIRA)" <ji...@apache.org> on 2019/05/23 02:13:00 UTC

[jira] [Commented] (FLINK-5809) Add registerNextWatermarkCallback() to TimerService

    [ https://issues.apache.org/jira/browse/FLINK-5809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16846371#comment-16846371 ] 

vinoyang commented on FLINK-5809:
---------------------------------

It seems the {{registerEventTimeTimer}} does not exist in the current code base. So maybe we can close this issue now. cc [~aljoscha]

> Add registerNextWatermarkCallback() to TimerService
> ---------------------------------------------------
>
>                 Key: FLINK-5809
>                 URL: https://issues.apache.org/jira/browse/FLINK-5809
>             Project: Flink
>          Issue Type: Improvement
>          Components: API / DataStream
>            Reporter: Aljoscha Krettek
>            Priority: Major
>
> This new method is similar to {{registerEventTimeTimer()}} but instead of specifying a certain time where the timer should fire this will simply fire whenever a new watermark arrives.
> This is, for example, useful when you want to buffer elements for sorting by event time and always want to emit as soon as the operator receives a watermark.



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