Github user brad-kaiser commented on a diff in the pull request:
https://github.com/apache/spark/pull/19041#discussion_r154987965
--- Diff: core/src/main/scala/org/apache/spark/CacheRecoveryManager.scala
---
@@ -0,0 +1,250 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark
+
+import java.util.concurrent.{ScheduledFuture, TimeUnit}
+
+import scala.collection.mutable
+import scala.concurrent.{ExecutionContext, Future}
+import scala.util.Failure
+
+import org.apache.spark.internal.Logging
+import
org.apache.spark.internal.config.DYN_ALLOCATION_RECOVER_CACHE_TIMEOUT
+import org.apache.spark.rpc.RpcEndpointRef
+import org.apache.spark.storage.{BlockId, BlockManagerId, RDDBlockId}
+import org.apache.spark.storage.BlockManagerMessages.{GetCachedBlocks,
GetMemoryStatus, GetSizeOfBlocks, ReplicateOneBlock}
+import org.apache.spark.util.ThreadUtils
+
+/**
+ * Responsible for asynchronously replicating all of an executors cached
blocks, and then shutting
+ * it down.
+ */
+final private class CacheRecoveryManager(
+ state: CacheRecoveryManagerState,
+ conf: SparkConf)
+ extends Logging {
+
+ private val threadPool =
ThreadUtils.newDaemonCachedThreadPool("recover-cache-shutdown-pool")
--- End diff --
fixed
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