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Posted to issues@calcite.apache.org by "Chunwei Lei (Jira)" <ji...@apache.org> on 2020/02/13 06:41:00 UTC
[jira] [Updated] (CALCITE-3791) HepPlanner doesn't clear metadata
cache for the ancestors of discarded node when a transformation happens
[ https://issues.apache.org/jira/browse/CALCITE-3791?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chunwei Lei updated CALCITE-3791:
---------------------------------
Summary: HepPlanner doesn't clear metadata cache for the ancestors of discarded node when a transformation happens (was: HepPlanner does't clear metadata cache for the ancestors of discarded node when a transformation happens)
> HepPlanner doesn't clear metadata cache for the ancestors of discarded node when a transformation happens
> ---------------------------------------------------------------------------------------------------------
>
> Key: CALCITE-3791
> URL: https://issues.apache.org/jira/browse/CALCITE-3791
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: Chunwei Lei
> Assignee: Chunwei Lei
> Priority: Major
>
> In HepPlanner, when a transformation happens, it will clear metadata cache for the parent of the discarded node[1]. But it doesn't clear the metadata cache for the ancestors of the parent. For example, assume we get a logical plan like
> A
> \
> B
> \
> C
> , if we clear the metadata cache for C after applying a rule, we should also clear the metadata cache for A and B since metadata of A and B derive from C.
>
> [1][https://github.com/apache/calcite/blob/master/core/src/main/java/org/apache/calcite/plan/hep/HepPlanner.java#L877]
>
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