Github user davies commented on a diff in the pull request: https://github.com/apache/spark/pull/3029#discussion_r20468644 --- Diff: core/src/main/scala/org/apache/spark/ui/ConsoleProgressBar.scala --- @@ -0,0 +1,115 @@ +/* + * 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.ui + +import java.util.{Timer, TimerTask} + +import org.apache.spark._ + +/** + * ConsoleProgressBar shows the progress of stages in the next line of the console. It poll the + * status of active stages from `sc.statusTracker` in every 200ms, the progress bar will be showed + * up after the stage has ran at least 500ms. If multiple stages run in the same time, the status + * of them will be combined together, showed in one line. + */ +private[spark] class ConsoleProgressBar(sc: SparkContext) extends Logging { --- End diff -- Right now, it only depends on statusTracker, but it may show some metrics later, so it's better to have `SparkContext` here.
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