mihaibudiu commented on code in PR #4324:
URL: https://github.com/apache/calcite/pull/4324#discussion_r2067510918
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core/src/main/java/org/apache/calcite/rex/RexUtil.java:
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@@ -2984,6 +2970,9 @@ private static class RexShiftShuttle extends RexShuttle {
}
}
+ /** Exception to catch when an expression explodes exponentially. */
+ private static class ExponentialExplosionError extends ControlFlowException
{}
Review Comment:
It doesn't have to be exponential, sometime even a small polynomial can be
too much.
I would call this "PlanTooComplex," since it indicates that optimizing the
plan produces a result that is too complex, either at the Rel or at the Rex
level (add this to the JavaDoc).
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