Ngone51 commented on a change in pull request #28911:
URL: https://github.com/apache/spark/pull/28911#discussion_r478175273
##########
File path:
core/src/main/scala/org/apache/spark/storage/ShuffleBlockFetcherIterator.scala
##########
@@ -466,42 +464,51 @@ final class ShuffleBlockFetcherIterator(
val cachedDirsByExec = hostLocalDirManager.getCachedHostLocalDirs()
val (hostLocalBlocksWithCachedDirs, hostLocalBlocksWithMissingDirs) =
hostLocalBlocksByExecutor
- .map { case (hostLocalBmId, bmInfos) =>
- (hostLocalBmId, bmInfos,
cachedDirsByExec.get(hostLocalBmId.executorId))
+ .map { case (hostLocalBmId, blockInfos) =>
+ (hostLocalBmId, blockInfos,
cachedDirsByExec.get(hostLocalBmId.executorId))
}.partition(_._3.isDefined)
- val bmId = blockManager.blockManagerId
val immutableHostLocalBlocksWithoutDirs =
- hostLocalBlocksWithMissingDirs.map { case (hostLocalBmId, bmInfos, _) =>
- hostLocalBmId -> bmInfos
+ hostLocalBlocksWithMissingDirs.map { case (hostLocalBmId, blockInfos, _)
=>
+ hostLocalBmId -> blockInfos
}.toMap
if (immutableHostLocalBlocksWithoutDirs.nonEmpty) {
logDebug(s"Asynchronous fetching host-local blocks without cached
executors' dir: " +
s"${immutableHostLocalBlocksWithoutDirs.mkString(", ")}")
- val execIdsWithoutDirs =
immutableHostLocalBlocksWithoutDirs.keys.map(_.executorId).toArray
- hostLocalDirManager.getHostLocalDirs(execIdsWithoutDirs) {
- case Success(dirs) =>
- immutableHostLocalBlocksWithoutDirs.foreach { case (hostLocalBmId,
blockInfos) =>
- blockInfos.takeWhile { case (blockId, _, mapIndex) =>
- fetchHostLocalBlock(
- blockId,
- mapIndex,
- dirs.get(hostLocalBmId.executorId),
- hostLocalBmId)
+ val dirFetchRequests = if (blockManager.externalShuffleServiceEnabled) {
+ val host = blockManager.blockManagerId.host
+ val port = blockManager.externalShuffleServicePort
+ Seq((host, port, immutableHostLocalBlocksWithoutDirs.keys.toArray))
+ } else {
+ immutableHostLocalBlocksWithoutDirs.keys
+ .map(bmId => (bmId.host, bmId.port, Array(bmId))).toSeq
+ }
+
+ dirFetchRequests.foreach { case (host, port, bmIds) =>
+ hostLocalDirManager.getHostLocalDirs(host, port,
bmIds.map(_.executorId)) {
+ case Success(dirsByExecId) =>
Review comment:
yes
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