Github user squito commented on a diff in the pull request: https://github.com/apache/spark/pull/22612#discussion_r222370714 --- Diff: core/src/main/scala/org/apache/spark/executor/ProcfsBasedSystems.scala --- @@ -0,0 +1,268 @@ +/* + * 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.executor + +import java.io._ +import java.nio.charset.Charset +import java.nio.file.{Files, Paths} + +import scala.collection.mutable +import scala.collection.mutable.ArrayBuffer +import scala.collection.mutable.Queue + +import org.apache.spark.SparkEnv +import org.apache.spark.internal.{config, Logging} + +private[spark] case class ProcfsBasedSystemsMetrics(jvmVmemTotal: Long, + jvmRSSTotal: Long, + pythonVmemTotal: Long, + pythonRSSTotal: Long, + otherVmemTotal: Long, + otherRSSTotal: Long) + +// Some of the ideas here are taken from the ProcfsBasedProcessTree class in hadoop +// project. +private[spark] class ProcfsBasedSystems extends Logging { + var procfsDir = "/proc/" --- End diff -- rather than making this a `var` for testing, you can make it an argument to the constructor, with a default value
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