spark WorkerCommandBuilder 源码
spark WorkerCommandBuilder 代码
文件路径：/core/src/main/scala/org/apache/spark/launcher/WorkerCommandBuilder.scala
/*
* 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.launcher
import java.io.File
import java.util.{HashMap => JHashMap, List => JList, Map => JMap}
import scala.collection.JavaConverters._
import org.apache.spark.deploy.Command
/**
* This class is used by CommandUtils. It uses some package-private APIs in SparkLauncher, and since
* Java doesn't have a feature similar to `private[spark]`, and we don't want that class to be
* public, needs to live in the same package as the rest of the library.
*/
private[spark] class WorkerCommandBuilder(sparkHome: String, memoryMb: Int, command: Command)
extends AbstractCommandBuilder {
childEnv.putAll(command.environment.asJava)
childEnv.put(CommandBuilderUtils.ENV_SPARK_HOME, sparkHome)
override def buildCommand(env: JMap[String, String]): JList[String] = {
val cmd = buildJavaCommand(command.classPathEntries.mkString(File.pathSeparator))
cmd.add(s"-Xmx${memoryMb}M")
command.javaOpts.foreach(cmd.add)
cmd
}
def buildCommand(): JList[String] = buildCommand(new JHashMap[String, String]())
}
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