comphead commented on code in PR #4758:
URL: https://github.com/apache/datafusion-comet/pull/4758#discussion_r3494294397
##########
spark/src/main/scala/org/apache/comet/rules/CometScanRule.scala:
##########
@@ -127,8 +127,10 @@ case class CometScanRule(session: SparkSession)
case scan if !CometConf.COMET_NATIVE_SCAN_ENABLED.get(conf) =>
withFallbackReason(scan, "Comet Scan is not enabled")
- case scan if hasMetadataCol(scan) =>
- withFallbackReason(scan, "Metadata column is not supported")
+ case scan if hasMetadataCol(scan).nonEmpty =>
+ withFallbackReason(
+ scan,
+ s"Metadata column ${hasMetadataCol(scan).mkString(", ")} is not
supported")
Review Comment:
```suggestion
s"Metadata column(s) ${hasMetadataCol(scan).mkString(", ")} is not
supported")
```
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