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Posted to issues@calcite.apache.org by "Jianhui Dong (Jira)" <ji...@apache.org> on 2021/09/15 03:32:00 UTC

[jira] [Closed] (CALCITE-4747) Remove outdated graph edges in HepPlanner

     [ https://issues.apache.org/jira/browse/CALCITE-4747?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jianhui Dong closed CALCITE-4747.
---------------------------------

> Remove outdated graph edges in HepPlanner
> -----------------------------------------
>
>                 Key: CALCITE-4747
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4747
>             Project: Calcite
>          Issue Type: Improvement
>            Reporter: Jianhui Dong
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 1.28.0
>
>         Attachments: image-2021-08-19-12-12-41-534.png
>
>          Time Spent: 2h 50m
>  Remaining Estimate: 0h
>
>   !image-2021-08-19-12-12-41-534.png!
> After we use HepPlanner to optimize the RelNode,  we need to replace old RelNode with the optimized RelNode, and update the graph in HepPlanner, but calcite only remove the outdated RelNode(HepRelVertex) in line 970, the edges between these vertices are still in the graph, which may cause a memory leak? IMO, I think maybe we should also remove the outdated edge.



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