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/*
* 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.util
import scala.language.postfixOps
import org.apache.spark.SparkConf
import org.apache.spark.rpc.{RpcAddress, RpcEndpointRef, RpcEnv, RpcTimeout}
private[spark] object RpcUtils {
/**
* Retrieve a [[RpcEndpointRef]] which is located in the driver via its name.
*/
def makeDriverRef(name: String, conf: SparkConf, rpcEnv: RpcEnv): RpcEndpointRef = {
val driverHost: String = conf.get("spark.driver.host", "localhost")
val driverPort: Int = conf.getInt("spark.driver.port", 7077)
Utils.checkHost(driverHost, "Expected hostname")
rpcEnv.setupEndpointRef(RpcAddress(driverHost, driverPort), name)
}
/** Returns the configured number of times to retry connecting */
def numRetries(conf: SparkConf): Int = {
conf.getInt("spark.rpc.numRetries", 3)
}
/** Returns the configured number of milliseconds to wait on each retry */
def retryWaitMs(conf: SparkConf): Long = {
conf.getTimeAsMs("spark.rpc.retry.wait", "3s")
}
/** Returns the default Spark timeout to use for RPC ask operations. */
def askRpcTimeout(conf: SparkConf): RpcTimeout = {
RpcTimeout(conf, Seq("spark.rpc.askTimeout", "spark.network.timeout"), "120s")
}
/** Returns the default Spark timeout to use for RPC remote endpoint lookup. */
def lookupRpcTimeout(conf: SparkConf): RpcTimeout = {
RpcTimeout(conf, Seq("spark.rpc.lookupTimeout", "spark.network.timeout"), "120s")
}
private val MAX_MESSAGE_SIZE_IN_MB = Int.MaxValue / 1024 / 1024
/** Returns the configured max message size for messages in bytes. */
def maxMessageSizeBytes(conf: SparkConf): Int = {
val maxSizeInMB = conf.getInt("spark.rpc.message.maxSize", 128)
if (maxSizeInMB > MAX_MESSAGE_SIZE_IN_MB) {
throw new IllegalArgumentException(
s"spark.rpc.message.maxSize should not be greater than $MAX_MESSAGE_SIZE_IN_MB MB")
}
maxSizeInMB * 1024 * 1024
}
}
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