Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/9091#discussion_r41833341
--- Diff: core/src/main/scala/org/apache/spark/rpc/RpcTimeout.scala ---
@@ -0,0 +1,131 @@
+/*
+ * 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.rpc
+
+import java.util.concurrent.TimeoutException
+
+import scala.concurrent.{Awaitable, Await}
+import scala.concurrent.duration._
+
+import org.apache.spark.SparkConf
+import org.apache.spark.util.Utils
+
+
+/**
+ * An exception thrown if RpcTimeout modifies a [[TimeoutException]].
+ */
+private[rpc] class RpcTimeoutException(message: String, cause:
TimeoutException)
+ extends TimeoutException(message) { initCause(cause) }
+
+
+/**
+ * Associates a timeout with a description so that a when a
TimeoutException occurs, additional
+ * context about the timeout can be amended to the exception message.
+ *
+ * @param duration timeout duration in seconds
+ * @param timeoutProp the configuration property that controls this timeout
+ */
+private[spark] class RpcTimeout(val duration: FiniteDuration, val
timeoutProp: String)
--- End diff --
I moved this into its own file -- but eventually it probably makes more
sense to just have this in spark.util package for more general timeouts.
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