Zhu Zhu created FLINK-14510:
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Summary: Remove the lazy vertex attaching mechanism from
ExecutionGraph
Key: FLINK-14510
URL: https://issues.apache.org/jira/browse/FLINK-14510
Project: Flink
Issue Type: Improvement
Components: Runtime / Coordination
Affects Versions: 1.10.0
Reporter: Zhu Zhu
Fix For: 1.10.0
Currently in production, the vertex attaching is only invoked right after the
ExecutionGraph is created in ExecutionGraphBuilder. That means lazy attaching
is not necessary at the moment. It however adds extra complexity to
ExecutionGraph, since we need to assume that the vertices may be not
initialized or even get changed.
Moreover, attaching vertices after a job starts scheduling is an undefined
behavior which would not work properly.
I'd propose to remove the lazy attaching mechanism, and do vertices building
and related components initialization in ExecutionGraph constructor.
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