[jira] [Created] (FLINK-14452) Keep only one execution topology in scheduler

[Shang Yuanchun (Jira)]

Zhu Zhu created FLINK-14452:
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             Summary: Keep only one execution topology in scheduler
                 Key: FLINK-14452
                 URL: https://issues.apache.org/jira/browse/FLINK-14452
             Project: Flink
          Issue Type: Sub-task
          Components: Runtime / Coordination
    Affects Versions: 1.10.0
            Reporter: Zhu Zhu
             Fix For: 1.10.0


With FLINK-14450 and FLINK-14451, the SchedulingTopology and FailoverTopology are able to share one default implementation. We can change the scheduler to create and keep only one such an execution topology instance to save computing and memory cost.

More details see FLINK-14330 and the [design doc|https://docs.google.com/document/d/1f88luAOfUQ6Pm4JkxYexLXpfH-crcXJdbubi1pS2Y5A/edit#].



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