Github user jiangxb1987 commented on a diff in the pull request: https://github.com/apache/spark/pull/19468#discussion_r148040015 --- Diff: core/src/main/scala/org/apache/spark/scheduler/cluster/SchedulerBackendUtils.scala --- @@ -0,0 +1,47 @@ +/* + * 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 --- End diff -- Should we remove this val from `YarnSparkHadoopUtil`?
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