LuciferYang commented on code in PR #52386:
URL: https://github.com/apache/spark/pull/52386#discussion_r2380948541
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core/src/main/scala/org/apache/spark/shuffle/IndexShuffleBlockResolver.scala:
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@@ -58,19 +58,19 @@ private[spark] class IndexShuffleBlockResolver(
conf: SparkConf,
// var for testing
var _blockManager: BlockManager,
- val taskIdMapsForShuffle: JMap[Int, OpenHashSet[Long]])
+ val taskIdMapsForShuffle: ConcurrentHashMap[Int, OpenHashSet[Long]])
Review Comment:
nit: I still recommend using the `ConcurrentMap` interface here.
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