parthchandra commented on code in PR #1667:
URL: https://github.com/apache/datafusion-comet/pull/1667#discussion_r2056942543
##########
spark/src/main/scala/org/apache/comet/CometSparkSessionExtensions.scala:
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@@ -161,10 +161,28 @@ class CometSparkSessionExtensions
}
if (!schemaSupported) {
- fallbackReasons += s"Unsupported schema ${scanExec.requiredSchema}
for $scanImpl"
+ val field: Option[StructField] =
+ CometNativeScanExec
+ .findUnsupportedField(scanExec.requiredSchema)
+
.orElse(CometScanExec.findUnsupportedField(scanExec.requiredSchema))
+ assert(field.nonEmpty)
+ fallbackReasons +=
+ s"Unsupported field ${field.get} in schema
${scanExec.requiredSchema} for $scanImpl"
Review Comment:
I like the idea of collecting the fallback reasons as part of the
`isTypeSupported` call and yes, renaming it to `validateTypeSupported` would be
a good idea in that case.
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