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https://issues.apache.org/jira/browse/FLINK-13056?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chesnay Schepler updated FLINK-13056:
-------------------------------------
Issue Type: Improvement (was: Sub-task)
Parent: (was: FLINK-4256)
> Optimize region failover performance on calculating vertices to restart
> -----------------------------------------------------------------------
>
> Key: FLINK-13056
> URL: https://issues.apache.org/jira/browse/FLINK-13056
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Coordination
> Affects Versions: 1.9.0
> Reporter: Zhu Zhu
> Assignee: Zhu Zhu
> Priority: Major
>
> Currently some region boundary structures are calculated each time of a
> region failover. This calculation can be heavy as its complexity goes up with
> execution edge count.
> We tested it in a sample case with 8000 vertices and 16,000,000 edges. It
> takes ~2.0s to calculate vertices to restart.
> (more details in
> [https://docs.google.com/document/d/197Ou-01h2obvxq8viKqg4FnOnsykOEKxk3r5WrVBPuA/edit?usp=sharing)]
> That's why we'd propose to cache the region boundary structures to improve
> the region failover performance.
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