ueshin commented on code in PR #52931:
URL: https://github.com/apache/spark/pull/52931#discussion_r2539703010
##########
core/src/main/scala/org/apache/spark/api/python/PythonRunner.scala:
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@@ -1015,7 +1036,10 @@ private[spark] class PythonRunner(
try {
stream.readInt() match {
case length if length >= 0 =>
- PythonWorkerUtils.readBytes(length, stream)
+ val data = PythonWorkerUtils.readBytes(length, stream)
+ recordsProcessed += 1
+ totalDataReceived += length
Review Comment:
If it shows "Batches: 0, Data: 0 B", it confuses users. It should also track
the numbers, or could you omit it in `PythonArrowOutput` if it's difficult to
track them?
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