[jira] [Created] (FLINK-19712) Pipelined region failover should skip restarting tasks in CREATED

[Shang Yuanchun (Jira)]

Zhu Zhu created FLINK-19712:
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             Summary: Pipelined region failover should skip restarting tasks in CREATED
                 Key: FLINK-19712
                 URL: https://issues.apache.org/jira/browse/FLINK-19712
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / Coordination
    Affects Versions: 1.12.0
            Reporter: Zhu Zhu
             Fix For: 1.12.0


When a task fails and it is pipelined region failover strategy, all tasks in the region of the failed task and in the downstream regions will be canceled for later re-scheduling. However, these tasks can be still in CREATED state so that there is no need to cancel these tasks. Skipping canceling these tasks can speed up the failover and reduce a lot of unnecessary CANCELING logs.



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