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[SPARK-30918][SQL][followup] Fix typo in OptimizeSkewedJoin #27714

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[SPARK-30918][SQL][followup] Fix typo in OptimizeSkewedJoin #27714

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2 changes: 1 addition & 1 deletion sql/core/src/main/scala/org/apache/spark/sql/execution/adaptive/OptimizeSkewedJoin.scala
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Expand Up @@ -48,7 +48,7 @@ import org.apache.spark.sql.internal.SQLConf
* right: [R1, R2, R3, R4]
*
* Let's say L2, L4 and R3, R4 are skewed, and each of them get split into 2 sub-partitions. This
* is scheduled to run 4 tasks at the beginning: (L1, R1), (L2, R2), (L2, R2), (L2, R2).
* is scheduled to run 4 tasks at the beginning: (L1, R1), (L2, R2), (L3, R3), (L4, R4).
* This rule expands it to 9 tasks to increase parallelism:
* (L1, R1),
* (L2-1, R2), (L2-2, R2),
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