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ASF GitHub Bot commented on FLINK-8322: --------------------------------------- Github user bowenli86 commented on the issue: https://github.com/apache/flink/pull/5236 @GJL Thanks for the feedback, will address them. I thought about this overnight, and realized this is actually not all parts I want to build. What I want is number of timers **per key** in a `KeyedStream`, not just all number of timers. Do you have any insights on how we can achieve that? > support getting number of existing timers in TimerService > --------------------------------------------------------- > > Key: FLINK-8322 > URL: https://issues.apache.org/jira/browse/FLINK-8322 > Project: Flink > Issue Type: Improvement > Components: DataStream API > Affects Versions: 1.4.0 > Reporter: Bowen Li > Assignee: Bowen Li > Fix For: 1.5.0 > > > There are pretty common use cases where users want to use timers as scheduled > threads - e.g. add a timer to wake up x hours later and do something (reap > old data usually) only if there's no existing timers, basically we only want > at most 1 timer exists for the key all the time -- This message was sent by Atlassian JIRA (v6.4.14#64029)