Aljoscha Krettek created FLINK-5012:
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Summary: Provide Timestamp in TimelyFlatMapFunction
Key: FLINK-5012
URL: https://issues.apache.org/jira/browse/FLINK-5012
Project: Flink
Issue Type: Improvement
Components: Streaming
Reporter: Aljoscha Krettek
Right now, {{TimelyFlatMapFunction}} does not give the timestamp of the element
in {{flatMap()}}.
The signature is currently this:
{code}
void flatMap(I value, TimerService timerService, Collector<O> out) throws
Exception;
{code}
if we add the timestamp it would become this:
{code}
void flatMap(I value, Long timestamp, TimerService timerService, Collector<O>
out) throws Exception;
{code}
The reason why it's a {{Long}} and not a {{long}} is that an element might not
have a timestamp, in that case we should hand in {{null}} here.
This is becoming quite look so we could add a {{Context}} parameter that
provides access to the timestamp and timer service.
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