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Posted to issues@flink.apache.org by "Bowen Li (JIRA)" <ji...@apache.org> on 2018/03/01 07:40:00 UTC

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

     [ https://issues.apache.org/jira/browse/FLINK-5809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bowen Li reassigned FLINK-5809:
-------------------------------

    Assignee: Bowen Li

> Add registerNextWatermarkCallback() to TimerService
> ---------------------------------------------------
>
>                 Key: FLINK-5809
>                 URL: https://issues.apache.org/jira/browse/FLINK-5809
>             Project: Flink
>          Issue Type: Improvement
>          Components: DataStream API
>            Reporter: Aljoscha Krettek
>            Assignee: Bowen Li
>            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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