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https://issues.apache.org/jira/browse/CALCITE-3668?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17007315#comment-17007315
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Vladimir Sitnikov commented on CALCITE-3668:
--------------------------------------------
Relevant discussion:
https://github.com/apache/calcite/pull/784#discussion_r245797826
It looks like all the subsets is not a valid option.
> VolcanoPlanner doesn't match all the RelSubSet in matchRecursive
> ----------------------------------------------------------------
>
> Key: CALCITE-3668
> URL: https://issues.apache.org/jira/browse/CALCITE-3668
> Project: Calcite
> Issue Type: Bug
> Reporter: Haisheng Yuan
> Priority: Major
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> If I have a rule to match pattern with Filter-RelSubset, VolcanoPlanner only
> matches 1 RelSubset in the RelSet, instead of all the subsets.
> {code:java}
> if (operand.getMatchedClass() == RelSubset.class) {
> // If the rule wants the whole subset, we just provide it
> successors = ImmutableList.of(subset);
> } else {
> successors = subset.getRelList();
> }
> {code}
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