Github user WangTaoTheTonic commented on the issue:
https://github.com/apache/flink/pull/3709
I'm not a akka expert. As we observed, the status of cancelled tasks will
be updated to running only when gc happens in JM.
Way to reproduce:
1. launch a flink job with ha mode
2. restart zookeeper(to make tasks failed)
3. after tasks recovered, check if status of tasks are running or
cancelled(if there's gc happens, tasks' status showed in web frontend will be
same with the actual states, or the tasks' status are delayed, may cause
inconsistend with those in backend)
We oberved such phenomemon in yarn mode, and it is fixed after this patch.
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