[jira] [Created] (FLINK-14330) Introduce a unified topology interface

[Shang Yuanchun (Jira)]

Zhu Zhu created FLINK-14330:
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             Summary: Introduce a unified topology interface
                 Key: FLINK-14330
                 URL: https://issues.apache.org/jira/browse/FLINK-14330
             Project: Flink
          Issue Type: Sub-task
          Components: Runtime / Coordination
    Affects Versions: 1.10.0
            Reporter: Zhu Zhu
             Fix For: 1.10.0


When working on FLINK-14312 to partition {{JobGraph}} into logical pipelined regions, I found that we can hardly reuse the existing util {{PipelinedRegionComputeUtil#computePipelinedRegions(..)}}  to do it since it's based on the {{FailoverTopology}}.
To avoid code duplication, we need a unified topology base for {{FailoverTopology}} and {{JobGraph/LogicalTopology}}.

Besides that, the inconsistency of {{FailoverTopology}} and {{SchedulingTopology}} is also causing troubles for development and performance.

That's why I'd propose to unify the interfaces all these topologies. More details can be found in this [design doc|https://docs.google.com/document/d/1f88luAOfUQ6Pm4JkxYexLXpfH-crcXJdbubi1pS2Y5A/edit#].



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