Gustavo de Morais created CALCITE-7164:
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Summary: Support hints for MultiJoin
Key: CALCITE-7164
URL: https://issues.apache.org/jira/browse/CALCITE-7164
Project: Calcite
Issue Type: Improvement
Reporter: Gustavo de Morais
The MultiJoin node currently doesn't support hints. This means that when we
convert a set of joins to a MultiJoin, the hints are lost and will not be
applied. Specifically for the currently implemented rules, the currently
reordering rules cause the STATE TTL hints to be lost.
It'd be good to have the hints property added to the MultiJoin node so that we
can preserve the hints coming from each join. Additionally, we have to update
the current optimizer rules that operate on MultiJoin to pass down this
property so it's not lost. Optimally, we could use a MultiJoin.copy method
instead of instantiating a new class every time so all rules don't have to be
updated on a change like this.
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