[VL] Support partial fallback generic unmapped catalyst expressions #12486
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taiyang-li wants to merge 2 commits into
Open
[VL] Support partial fallback generic unmapped catalyst expressions #12486taiyang-li wants to merge 2 commits into
taiyang-li wants to merge 2 commits into
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…l project Support custom catalyst expressions from user jars in ColumnarPartialProject when Velox cannot map them natively, while keeping ScalaUDF and HiveUDF on their existing fallback paths.
taiyang-li
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Keep the new generic unmapped catalyst expression note concise while preserving the intent of the fallback behavior.
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What changes were proposed in this pull request?
ColumnarPartialProject previously did not recognize generic unmapped catalyst expressions shipped in user jars. When such a custom catalyst expression was not registered in
ExpressionMappings, it was not identified for partial-project fallback and could still reach native expression conversion and fail at runtime.This patch makes Velox detect those generic unmapped catalyst expressions earlier and route them through
ColumnarPartialProjectfallback.ScalaUDFand Hive UDF keep using their existing dedicated paths instead of being folded into the generic fallback path.How was this patch tested?
DummyUnmappedExprinUDFPartialProjectSuiteDoes this PR introduce any user-facing change?
No.
Was this patch authored or co-authored using generative AI tooling?
Yes.
Generated-by: OpenAI GPT-5