[ https://issues.apache.org/jira/browse/CALCITE-3819?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Haisheng Yuan resolved CALCITE-3819. ------------------------------------ Fix Version/s: 1.23.0 Resolution: Fixed Fixed in https://github.com/apache/calcite/commit/0f7dcfbffdf2e2405c835d22af78dac7124a728f. > Prune parent RelNode when merging child RelSet with parent RelSet > ----------------------------------------------------------------- > > Key: CALCITE-3819 > URL: https://issues.apache.org/jira/browse/CALCITE-3819 > Project: Calcite > Issue Type: Improvement > Components: core > Reporter: Haisheng Yuan > Assignee: Haisheng Yuan > Priority: Major > Labels: pull-request-available > Fix For: 1.23.0 > > Time Spent: 20m > Remaining Estimate: 0h > > Suppose we have 2 RelSets: > RelSet A: rel1 > RelSet B: rel2 > rel1 is the parent of rel2. > If there is a transformation rule that transform rel1 to rel2, we will merge > RelSet A and B. During merge process, we can safely prune rel1 to avoid > further rule apply on rel1 and reduce search space, more importantly, avoid > cyclic reference. -- This message was sent by Atlassian Jira (v8.3.4#803005)