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https://issues.apache.org/jira/browse/FLINK-3714?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kostas Kloudas reassigned FLINK-3714:
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Assignee: Kostas Kloudas
> Add Support for "Allowed Lateness"
> ----------------------------------
>
> Key: FLINK-3714
> URL: https://issues.apache.org/jira/browse/FLINK-3714
> Project: Flink
> Issue Type: Sub-task
> Components: Streaming
> Reporter: Aljoscha Krettek
> Assignee: Kostas Kloudas
>
> As mentioned in
> https://docs.google.com/document/d/1Xp-YBf87vLTduYSivgqWVEMjYUmkA-hyb4muX3KRl08/edit#
> we should add support for an allowed lateness setting.
> This includes several things:
> - API for setting allowed lateness
> - Dropping of late elements
> - Garbage collection of event-time windows
> Lateness only makes sense for event-time windows. So we also have to figure
> out what the API for this should look like and especially what should happen
> with the "stream-time characteristic" switch. For example in this:
> {code}
> env.setStreamTimeCharacteristic(ProcessingTime)
> ...
> DataStream in = ...
> result = in
> .keyBy()
> .timeWindow()
> .allowedLateness()
> .apply()
> {code}
> I think the setting can be silently ignored when doing processing-time
> windowing.
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