stage

spark调优(二):资源调优

穿精又带淫゛_ 提交于 2019-12-14 00:47:27
转发学习自美团技术团队: https://tech.meituan.com 建议继续阅读之前先对这篇文章的内容有一定了解: Apache Spark 内存管理详解 推荐阅读: spark调优(一):开发调优 资源调优概述 在开发完Spark作业之后,就该为作业配置合适的资源了。Spark的资源参数,基本都可以在spark-submit命令中作为参数设置。很多Spark初学者,通常不知道该设置哪些必要的参数,以及如何设置这些参数,最后就只能胡乱设置,甚至压根儿不设置。资源参数设置的不合理,可能会导致没有充分利用集群资源,作业运行会极其缓慢;或者设置的资源过大,队列没有足够的资源来提供,进而导致各种异常。总之,无论是哪种情况,都会导致Spark作业的运行效率低下,甚至根本无法运行。因此我们必须对Spark作业的资源使用原理有一个清晰的认识,并知道在Spark作业运行过程中,有哪些资源参数是可以设置的,以及如何设置合适的参数值。 1、Spark作业基本运行原理 详细原理见上图。我们使用spark-submit提交一个Spark作业之后,这个作业就会启动一个对应的Driver进程。根据你使用的部署模式(deploy-mode)不同,Driver进程可能在本地启动,也可能在集群中某个工作节点上启动。Driver进程本身会根据我们设置的参数,占有一定数量的内存和CPU core

Stop the main timeline from within a Class function

白昼怎懂夜的黑 提交于 2019-12-13 07:43:27
问题 I need to stop the movie at the first frame using a function from a class, I know I can use stop(); or this.stop(); but how do I stop the main timeline from within a class function? package { public class myApplication { public function myApplication(stageRoot:Stage) { stop(); // this doesn't work this.stop(); // this doesn't work either } } } 回答1: You can access the main timeline from any display object (that is on the display list) by using the root keyword: MovieClip(root).stop(); If your

Adding to Stage in ActionScript 3 from a .as file

ぃ、小莉子 提交于 2019-12-13 07:36:11
问题 Note: Yes, I know that similar questions have been asked before. However, after following the answers in such questions I'm still stuck and can't find a solution to my problem. I'm having a problem which requires adding DisplayObjects to the Flash stage. Since I have to Display elements of several different classes, I decided to create a class to work as an intermediary between the .as files and the addChild function called "Displayer" as shown below: package { import flash.display

how to add movements to bezier curve in kineticjs?

两盒软妹~` 提交于 2019-12-12 14:33:57
问题 I have done this without kinetic.This piece of code is working fab as I wanted. --fiddle without kineticjs. Take a look Now I want to do the same code with kineticjs. Here is is what I have done till now--fiddle with kineticjs. The lines don`t move at all?where am I going wrong?I have spent the entire day but couldnt figure out the problem. This is my javascript with kinetic.results cannot be seen in fiddle because there is no option for including kineticjs.though I have put my code up there

Create resizable borders for empty stage

|▌冷眼眸甩不掉的悲伤 提交于 2019-12-11 09:15:36
问题 I have a blank javafx.stage.Stage with no icons minimize , maximize , and close stage.initStyle(StageStyle.UNDECORATED); . I want to create them myself, because on the line with them will make more Buttons . Because I use an empty style for the Stage , I need to set a resizable borders for my window. There are standard ways to do this? Because to create them as a BorderPane and customize the dragging of the mouse is cumbersome. 回答1: altered from a project of mine This is how it looks when

Cannot show user input with a textfield

梦想的初衷 提交于 2019-12-11 04:56:47
问题 I'm trying to use a TextField to get some user input: public void render() { Gdx.gl.glClear(GL11.GL_COLOR_BUFFER_BIT); Gdx.gl.glClearColor(0, 0, 0, 0); batch.begin(); batch.end(); stage = new Stage(); Gdx.input.setInputProcessor(stage); Skin skin = new Skin(Gdx.files.internal("assets/uiskin.json")); TextButton btnLogin = new TextButton("Click", skin); btnLogin.setPosition(300, 300); btnLogin.setSize(300, 60); btnLogin.addListener(new ClickListener() { public boolean touchDown(InputEvent e,

spark资源调度和任务调度

不问归期 提交于 2019-12-10 23:36:57
资源调度: (1)executor默认在集群中分散启动,可通过 参数配置 集中在某个work启动,不过分散启动有利于数据本地化。 (2)如果spark-submit提交任务时,如果不指定--executor-cores,则spark会在每个work中启动一个executor并消耗掉work中的所有core和1G的内存。 (3)如果只设置--executor-cores而不设置--total-executor-cores则会,每启动一个executor耗费--executor-cores配置的核,而且也会消耗掉所有work中的core,直到不能在启动executor为止。 (4)只有指定--executor-cores并且指定--total-executor-cores,才会限定住 executor的个数 和 每个executor需要的core个数 。 任务调度: 按照action算子划分job,每个job由DAGSchedule划分stage,由finalRdd开始由后向前递归划分stage,划分stage的关键方法是submitStage: private def submitStage(stage: Stage) { val jobId = activeJobForStage(stage) if (jobId.isDefined) { logDebug("submitStage

Make Rectangle transparent

两盒软妹~` 提交于 2019-12-10 20:34:56
问题 I need to make a drawn rectangle mouse transparent, in order to see the desktop. The following code draws my rectangle. What should I add to get that ? Thanks for help public void start(Stage primaryStage) { Group group = new Group(); Rectangle rect = new Rectangle(20,20,200,200); rect.setArcHeight(15); rect.setArcWidth(15); rect.setStroke(Color.BLACK); group.getChildren().add(rect); Scene scene = new Scene(group, 300, 200); primaryStage.setScene(scene); primaryStage.show(); } 回答1: Since the

Cascade R-CNN 集联RCNN最全论文解析!只需一文!全面掌握!

邮差的信 提交于 2019-12-10 09:43:12
Cascade R-CNN 文章目录 Cascade R-CNN @[toc] 概述 相关工作 IoU及阈值关系 Cascade R-CNN 级联结构分析 Stage过程的分布变化 Cascade R-CNN Detection实现 实验分析 Quality Mismatch Ablation Experiments Comparison with *Iterative BBox* and *Intergral Loss* Comparison with the state-of-the-art 总结 红色字体部分解析 概述 本文主要针对的是目标检测问题中IoU阈值选择的问题,提出了一种muti-stage的architecture,称之为Cascade,主要思路为:在R-CNN结构系列的train和inference阶段,利用不断提高的IoU阈值,在保证样本数不减少的情况下,用一个stage的输出去训练下一个stage ,每个stage做重采样保证高质量低噪声的数据样本,提高检测器的训练质量。 IoU阈值*u*设置的对抗性: 1) u 设置得太高,虽然正样本proposals包含较少的background,但是相应的训练样本的数量也会减少,容易引发过拟合; 2) u 设置得太低,虽然样本数量有了保证,但是正样本proposals包含更多的background

Question about RDD、分区、stage、并行计算、集群、流水线计算、shuffle(join??)、task、executor

£可爱£侵袭症+ 提交于 2019-12-10 05:07:15
Question about RDD、分区、stage、并行计算、集群、流水线计算、shuffle(join??)、task、executor RDD是spark数据中最基本的数据抽象,task是spark的最小代码执行单元?数据不是代码的资源???那为什么RDD又是分区存储?节点中又是对分区(父分区进行流水线计算)?RDD只能转换操作,但是RDD可以分成多个分区,而且这些分区可以被保存到集群中不同的节点,可在不同的节点进行并行计算,那RDD还是高度受限的吗?在一个节点的中以流水线形式计算窄关系的父节点,那RDD还是高度受限的吗?将RDD分成stage,又是为了什么?分配资源吗?优化效率吗?哈希分区和范围分区?shuffle又是什么???task也又是什么??? 流水线计算?是transformation??那就是进行数据的筛选??不对,机器学习算法和交互式数据挖掘使用的目的是什么?理解这个能够理解父分区中的流水计算! shuffle操作中的reduce task需要 跨节点去拉取(为什么要跨节点拉取,因为RDD的不同分区都是在不同的节点储存,但宽关联是子RDD的一个分区就需要父RDD的所有分区,肯定要跨节点。而窄关联的子RDD中的一个分区只是有父RDD的一个分区就可,所以不需要跨节点,但是 join????? 前提组成子RDD的分区的父分区都在同一个节点??