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Posted to issues@calcite.apache.org by "Feng Zhu (Jira)" <ji...@apache.org> on 2020/04/20 12:38:00 UTC
[jira] [Resolved] (CALCITE-3447) Fix equivalents in method
SubstitutionVisitor#go
[ https://issues.apache.org/jira/browse/CALCITE-3447?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Feng Zhu resolved CALCITE-3447.
-------------------------------
Fix Version/s: 1.23.0
Resolution: Fixed
> Fix equivalents in method SubstitutionVisitor#go
> ------------------------------------------------
>
> Key: CALCITE-3447
> URL: https://issues.apache.org/jira/browse/CALCITE-3447
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: daimin
> Priority: Minor
> Labels: pull-request-available
> Fix For: 1.23.0
>
> Time Spent: 6h 50m
> Remaining Estimate: 0h
>
> Code segment here depends on `hashcode` and `equals` methods of class `MutableRel`:
> [https://github.com/apache/calcite/blob/master/core/src/main/java/org/apache/calcite/plan/SubstitutionVisitor.java#L492-L502]
> However the implementations of class `MutableScan` delegates to class `TableScan`, which directly relies on implementations of class `Object`. This leads to a situation that two `MutableScan` on the exactly same table will not be considered as equivalent.
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