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https://issues.apache.org/jira/browse/FLINK-14510?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhu Zhu reassigned FLINK-14510:
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Assignee: Zhu Zhu
> 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
> Assignee: Zhu Zhu
> Priority: Major
> Fix For: 1.12.0
>
>
> 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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