spark SchedulerBackendUtils 源码

2022-10-20
浏览 (316)

spark SchedulerBackendUtils 代码

文件路径：/core/src/main/scala/org/apache/spark/scheduler/cluster/SchedulerBackendUtils.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.scheduler.cluster

import org.apache.spark.SparkConf
import org.apache.spark.internal.config.{DYN_ALLOCATION_MAX_EXECUTORS, DYN_ALLOCATION_MIN_EXECUTORS, EXECUTOR_INSTANCES}
import org.apache.spark.util.Utils

private[spark] object SchedulerBackendUtils {
  val DEFAULT_NUMBER_EXECUTORS = 2

  /**
   * Getting the initial target number of executors depends on whether dynamic allocation is
   * enabled.
   * If not using dynamic allocation it gets the number of executors requested by the user.
   */
  def getInitialTargetExecutorNumber(
      conf: SparkConf,
      numExecutors: Int = DEFAULT_NUMBER_EXECUTORS): Int = {
    if (Utils.isDynamicAllocationEnabled(conf)) {
      val minNumExecutors = conf.get(DYN_ALLOCATION_MIN_EXECUTORS)
      val initialNumExecutors = Utils.getDynamicAllocationInitialExecutors(conf)
      val maxNumExecutors = conf.get(DYN_ALLOCATION_MAX_EXECUTORS)
      require(initialNumExecutors >= minNumExecutors && initialNumExecutors <= maxNumExecutors,
        s"initial executor number $initialNumExecutors must between min executor number " +
          s"$minNumExecutors and max executor number $maxNumExecutors")

      initialNumExecutors
    } else {
      conf.get(EXECUTOR_INSTANCES).getOrElse(numExecutors)
    }
  }
}

相关信息

spark 源码目录

相关文章

spark CoarseGrainedClusterMessage 源码

spark CoarseGrainedSchedulerBackend 源码

spark ExecutorData 源码

spark ExecutorInfo 源码

spark StandaloneSchedulerBackend 源码

0 赞

所属分类： 前端技术
本文标签：
版权声明： 原创文章如转载，请注明本文链接: https://www.seaxiang.com/blog/18ca9036238949b58a7529e8940e71a9

热门推荐

1、直接访问google.com
2、 - 优质文章
3、 gate.io
4、 harmony 鸿蒙hdc使用指导
5、 harmony 鸿蒙初识ArkTS语言
6、 harmony 鸿蒙ArkUI组件（ArkTS）开发常见问题
7、 flink kafka connector scan.startup.mode 的几个选项
8、 golang
9、 openharmony
10、 Vue中input框自动聚焦

Loading...