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Posted to issues@flink.apache.org by "Zhu Zhu (Jira)" <ji...@apache.org> on 2020/01/14 07:18:00 UTC

[jira] [Updated] (FLINK-15249) Improve PipelinedRegions calculation with Union Set

     [ https://issues.apache.org/jira/browse/FLINK-15249?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zhu Zhu updated FLINK-15249:
----------------------------
    Attachment: RegionFailoverPerfTest.java

> Improve PipelinedRegions calculation with Union Set
> ---------------------------------------------------
>
>                 Key: FLINK-15249
>                 URL: https://issues.apache.org/jira/browse/FLINK-15249
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Coordination
>            Reporter: Chongchen Chen
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: PipelinedRegionComputeUtil.diff, RegionFailoverPerfTest.java
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Union Set's Merge Set cost is O(1). current implementation is O(N). the attachment is patch.
> [Disjoint Set Data Structure|[https://en.wikipedia.org/wiki/Disjoint-set_data_structure]]



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