HyukjinKwon commented on a change in pull request #33310:
URL: https://github.com/apache/spark/pull/33310#discussion_r672719894
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/ShuffledRowRDD.scala
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@@ -58,6 +58,12 @@ case class PartialMapperPartitionSpec(
startReducerIndex: Int,
endReducerIndex: Int) extends ShufflePartitionSpec
+// Follow-up: consider using map location for coalescing mappers
Review comment:
If we plan to leave it as a followup, we should file a JIRA, and fix the
comment as, for example, `// TODO(SPARK-XXXXX): blah blah blah`
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