zhli1142015 commented on code in PR #11197:
URL: 
https://github.com/apache/incubator-gluten/pull/11197#discussion_r2568347863


##########
backends-velox/src/main/scala/org/apache/gluten/execution/ColumnarCollectLimitExec.scala:
##########
@@ -28,6 +29,76 @@ case class ColumnarCollectLimitExec(
     offset: Int = 0
 ) extends ColumnarCollectLimitBaseExec(limit, child, offset) {
 
+  /**
+   * Override doExecuteColumnar to handle zero-column schema specially. Velox 
doesn't support

Review Comment:
   I see. Then let’s temporarily fallback this case to align with the existing 
logic.



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