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Posted to issues@calcite.apache.org by "Botong Huang (JIRA)" <ji...@apache.org> on 2019/06/06 16:30:00 UTC
[jira] [Created] (CALCITE-3118) VolcanoRuleCall match parent child
ordinal not properly checked
Botong Huang created CALCITE-3118:
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Summary: VolcanoRuleCall match parent child ordinal not properly checked
Key: CALCITE-3118
URL: https://issues.apache.org/jira/browse/CALCITE-3118
Project: Calcite
Issue Type: Bug
Reporter: Botong Huang
In VolcanoRuleCall.matchRecurse(), when ascending (child operand is matched, looking for parent operand match), we want to check that the matched parent indeed has the previously matched child RelNode as a child with the expected ordinal. However, there is a bug in this check. As a result, some incorrect parent is not skipped as expected and matched incorrectly. See unit test included in PR for a case that triggers this bug, where the same RelNode get matched for two operands at the same time.
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