viirya commented on code in PR #92:
URL:
https://github.com/apache/arrow-datafusion-comet/pull/92#discussion_r1499659177
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spark/src/main/scala/org/apache/spark/sql/comet/operators.scala:
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@@ -81,7 +81,11 @@ abstract class CometExec extends CometPlan {
out.flush()
out.close()
- Iterator((count, cbbos.toChunkedByteBuffer))
+ if (out.size() > 0) {
Review Comment:
> I think this is due to the extra bytes being written in the encode
compressed stream, causing it to be determined not empty in
CometExec$.decodeBatches.
If there are extra bytes written, is `out.size()` 0?
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