cloud-fan commented on code in PR #45930:
URL: https://github.com/apache/spark/pull/45930#discussion_r1575686724
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sql/core/src/main/scala/org/apache/spark/sql/execution/adaptive/AdaptiveSparkPlanExec.scala:
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@@ -869,6 +874,8 @@ case class AdaptiveExecutionContext(session: SparkSession,
qe: QueryExecution) {
*/
val stageCache: TrieMap[SparkPlan, ExchangeQueryStageExec] =
new TrieMap[SparkPlan, ExchangeQueryStageExec]()
+
+ val shuffleIds: TrieMap[Int, Boolean] = new TrieMap[Int, Boolean]()
Review Comment:
what does the value mean? BTW, `stageCache` uses `TrieMap` because the key
is `SparkPlan`. For int key, I think normal hash map works fine
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