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https://issues.apache.org/jira/browse/FLINK-4992?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aljoscha Krettek updated FLINK-4992:
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Component/s: (was: Streaming)
DataStream API
> Expose String parameter for timers in Timely functions and TimerService
> -----------------------------------------------------------------------
>
> Key: FLINK-4992
> URL: https://issues.apache.org/jira/browse/FLINK-4992
> Project: Flink
> Issue Type: Improvement
> Components: DataStream API
> Affects Versions: 1.2.0
> Reporter: Gyula Fora
> Priority: Minor
>
> Currently it is very hard to register and execute multiple different types
> timers from the same user function because timers don't carry any metadata.
> We propose to extend the timer registration and onTimer logic by attaching a
> String argument so users of these features can implement functionality that
> depends on this addtitional metadata.
> The proposed new methods:
> In the TimerService:
> void registerProcessingTimeTimer(long time, String label);
> void registerEventTimeTimer(long time, String label);
> In the TimelyFunctions:
> void onTimer(long timestamp, String label, TimeDomain timeDomain,
> TimerService timerService...);
> This extended functionality can be mapped to a String namespace for the
> internal timer service. I suggest we don't use the term "namespace" here
> because it just complicates things for the users, I think "label" or "id" or
> "name" is much simpler to understand.
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