zml1206 commented on code in PR #52646:
URL: https://github.com/apache/spark/pull/52646#discussion_r2613143545
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core/src/main/scala/org/apache/spark/storage/BlockInfoManager.scala:
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@@ -149,6 +149,14 @@ private[storage] class
BlockInfoManager(trackingCacheVisibility: Boolean = false
*/
private[this] val blockInfoWrappers = new ConcurrentHashMap[BlockId,
BlockInfoWrapper]
+ // Cache mappings to avoid O(n) scans in remove operations.
+ private[this] val rddToBlockIds =
+ new ConcurrentHashMap[Int, ConcurrentHashMap.KeySetView[BlockId,
java.lang.Boolean]]()
+ private[this] val broadcastToBlockIds =
+ new ConcurrentHashMap[Long, ConcurrentHashMap.KeySetView[BlockId,
java.lang.Boolean]]()
+ private[this] val sessionToBlockIds =
+ new ConcurrentHashMap[String, ConcurrentHashMap.KeySetView[BlockId,
java.lang.Boolean]]()
+
Review Comment:
As far as I know, shuffle blocks is fine.
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