Vladimir Ozerov created CALCITE-4650:
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Summary: TopDownRuleDriver.DeriveTrait.derive produces wrong
AssertionError when registering new nodes
Key: CALCITE-4650
URL: https://issues.apache.org/jira/browse/CALCITE-4650
Project: Calcite
Issue Type: Bug
Components: core
Affects Versions: 1.27.0
Reporter: Vladimir Ozerov
Assignee: Vladimir Ozerov
Fix For: next
{{TopDownRuleDriver.DeriveTrait.derive}} asserts that a derived node belongs to
the same {{RelSet}} as the original node.
If the original node {{N1}} refers to set {{S1}}, the derived node {{N2}} might
be registered in the set {{S2}}, if {{S1}} was merged to {{S2}} between the
registration of {{N1}} and derivation of {{N2}}.
Currently, we compare the original set of the original node {{N1}} with the
canonical set of the derived node {{N2}}. This leads to false assertions.
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