vanzin commented on a change in pull request #25299: [SPARK-27651][Core] Avoid
the network when shuffle blocks are fetched from the same host
URL: https://github.com/apache/spark/pull/25299#discussion_r346960133
##########
File path: core/src/main/scala/org/apache/spark/storage/BlockManager.scala
##########
@@ -113,6 +114,41 @@ private[spark] class ByteBufferBlockData(
}
+private[spark] class HostLocalDirManager(
+ futureExecutionContext: ExecutionContext,
+ cacheSize: Int,
+ externalBlockStoreClient: ExternalBlockStoreClient,
+ host: String,
+ externalShuffleServicePort: Int) extends Logging {
+
+ private val executorIdToLocalDirsCache =
+ CacheBuilder
+ .newBuilder()
+ .maximumSize(cacheSize)
+ .build[String, Array[String]]()
+
+ private[spark] def getCachedHostLocalDirs()
+ : scala.collection.Map[String, Array[String]] =
executorIdToLocalDirsCache.synchronized {
Review comment:
indent more
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