Marieke Gueye created CALCITE-5663:
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Summary: [TestKit] RelOptFixture does not enforce the collation
Key: CALCITE-5663
URL: https://issues.apache.org/jira/browse/CALCITE-5663
Project: Calcite
Issue Type: Bug
Reporter: Marieke Gueye
In RelOptFixture, we currently change the traitsets to enforce
EnumerableConvention.INSTANCE, however, in this instance we forget to port the
collation in the traitset.
```
if (planner instanceof VolcanoPlanner) {
r2 =
planner.changeTraits(relBefore,
relBefore.getTraitSet().replace(EnumerableConvention.INSTANCE));
} else {
r2 = relBefore;
}
```
The problem goes even deeper, as of now, there is no way to get access to the
collation as it lives in the relRoot, and we currently only access the relNode
through the `relSupplier`
The consequence of this can be pretty dire as it may mean that some rules might
be incorrectly tested.
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