[GitHub] [spark] f-thiele commented on a change in pull request #34043: [SPARK-36782][CORE] Avoid blocking dispatcher-BlockManagerMaster during UpdateBlockInfo

[GitBox <gi...@apache.org>]

f-thiele commented on a change in pull request #34043:
URL: https://github.com/apache/spark/pull/34043#discussion_r714116809



##########
File path: core/src/main/scala/org/apache/spark/storage/BlockManagerMasterEndpoint.scala
##########
@@ -573,39 +576,41 @@ class BlockManagerMasterEndpoint(
       blockId: BlockId,
       storageLevel: StorageLevel,
       memSize: Long,
-      diskSize: Long): Boolean = {
+      diskSize: Long): Future[Boolean] = {
     logDebug(s"Updating block info on master ${blockId} for ${blockManagerId}")
 
     if (blockId.isShuffle) {
       blockId match {
         case ShuffleIndexBlockId(shuffleId, mapId, _) =>
           // We need to update this at index file because there exists the index-only block
           logDebug(s"Received shuffle index block update for ${shuffleId} ${mapId}, updating.")
-          mapOutputTracker.updateMapOutput(shuffleId, mapId, blockManagerId)
-          return true
+          return Future {
+            mapOutputTracker.updateMapOutput(shuffleId, mapId, blockManagerId)
+            true
+          }

Review comment:
       :+1: done in 26b3b1118cc9701127c359b69b25ecf3a023c748




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