pyspark🍒🥭 is delicious,just eat it!😋😋

Overview

如何用10天吃掉pyspark? 🔥 🔥

《10天吃掉那只pyspark》

《20天吃掉那只Pytorch》

《30天吃掉那只TensorFlow2》

一,pyspark 🍎 or spark-scala 🔥 ?

pyspark强于分析,spark-scala强于工程。

如果应用场景有非常高的性能需求,应该选择spark-scala.

如果应用场景有非常多的可视化和机器学习算法需求,推荐使用pyspark,可以更好地和python中的相关库配合使用。

此外spark-scala支持spark graphx图计算模块,而pyspark是不支持的。


pyspark学习曲线平缓,spark-scala学习曲线陡峭。

从学习成本来说,spark-scala学习曲线陡峭,不仅因为scala是一门困难的语言,更加因为在前方的道路上会有无尽的环境配置痛苦等待着读者。

而pyspark学习成本相对较低,环境配置相对容易。从学习成本来说,如果说pyspark的学习成本是3,那么spark-scala的学习成本大概是9。

如果读者有较强的学习能力和充分的学习时间,建议选择spark-scala,能够解锁spark的全部技能,并获得最优性能,这也是工业界最普遍使用spark的方式。

如果读者学习时间有限,并对Python情有独钟,建议选择pyspark。pyspark在工业界的使用目前也越来越普遍。


二,本书 📚 面向读者 🤗

本书假定读者具有基础的的Python编码能力,熟悉Python中numpy, pandas库的基本用法。

并且假定读者具有一定的SQL使用经验,熟悉select,join,group by等sql语法。

对于Python基础不是非常扎实的读者,可以参考《3小时Python入门》文章。

《3小时Python入门》

对于numpy和Pandas不甚了解的读者,可以参考 《3小时入门numpy,pandas,matplotlib》文章。

《3小时入门numpy,pandas,matplotlib》


三,本书写作风格 🍉

本书是一本对人类用户极其友善的pyspark入门工具书,Don't let me think是本书的最高追求。

本书主要是在参考spark官方文档,并结合作者学习使用经验基础上整理总结写成的。

不同于Spark官方文档的繁冗断码,本书在篇章结构和范例选取上做了大量的优化,在用户友好度方面更胜一筹。

本书按照内容难易程度、读者检索习惯和spark自身的层次结构设计内容,循序渐进,层次清晰,方便按照功能查找相应范例。

本书在范例设计上尽可能简约化和结构化,增强范例易读性和通用性,大部分代码片段在实践中可即取即用。

如果说通过学习spark官方文档掌握pyspark的难度大概是5,那么通过本书学习掌握pyspark的难度应该大概是2.

仅以下图对比spark官方文档与本书《10天吃掉那只pyspark》的差异。


四,本书学习方案

1,学习计划

本书是作者利用工作之余大概1个月写成的,大部分读者应该在10天可以完全学会。

预计每天花费的学习时间在30分钟到2个小时之间。

当然,本书也非常适合作为pyspark的工具手册在工程落地时作为范例库参考。

点击学习内容蓝色标题即可进入该章节。

日期 学习内容 内容难度 预计学习时间 更新状态
  一、基础篇      
day1 1-1,快速搭建你的Spark开发环境 ⭐️ ⭐️ 1hour
day2 1-2,1小时看懂Spark的基本原理 ⭐️ ⭐️ ⭐️ 1hour
  二、核心篇      
day3 2-1,2小时入门Spark之RDD编程 ⭐️ ⭐️ ⭐️ 2hour
day4 2-2,7道RDD编程练习题 ⭐️ ⭐️ ⭐️ 1hour
day5 2-3,2小时入门SparkSQL编程 ⭐️ ⭐️ ⭐️ 2hour
day6 2-4,7道SparkSQL编程练习题 ⭐️ ⭐️ ⭐️ 1hour
  三、进阶篇      
day7 3-1,Spark性能调优方法 ⭐️ ⭐️ ⭐️ ⭐️ ⭐️ 2hour
day8 3-2,RDD和SparkSQL综合应用 ⭐️ ⭐️ ⭐️ ⭐️ ⭐️ 2hour
  四、拓展篇      
day9 4-1,探索MLlib机器学习 ⭐️ ⭐️ ⭐️ ⭐️ 2hour
day10 4-2,初识StructuredStreaming ⭐️ ⭐️ ⭐️ ⭐️ 2hour

2,学习环境

本书全部源码在jupyter中编写测试通过,建议通过git克隆到本地,并在jupyter中交互式运行学习。

为了直接能够在jupyter中打开markdown文件,建议安装jupytext,将markdown转换成ipynb文件。

为简单起见,本书按照如下2个步骤配置单机版spark3.0.1环境进行练习。

step1: 安装java8

jdk下载地址:https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

java安装教程:https://www.runoob.com/java/java-environment-setup.html

step2: 安装pyspark,findspark

pip install -i https://pypi.tuna.tsinghua.edu.cn/simple pyspark

pip install findspark

此外,也可以在kesci云端notebook中直接运行pyspark

https://www.kesci.com/home/project

import findspark

#指定spark_home,指定python路径
spark_home = "/Users/liangyun/anaconda3/lib/python3.7/site-packages/pyspark"
python_path = "/Users/liangyun/anaconda3/bin/python"
findspark.init(spark_home,python_path)

import pyspark 
from pyspark import SparkContext, SparkConf
conf = SparkConf().setAppName("test").setMaster("local[4]")
sc = SparkContext(conf=conf)

print("spark version:",pyspark.__version__)
rdd = sc.parallelize(["hello","spark"])
print(rdd.reduce(lambda x,y:x+' '+y))
spark version: 3.0.1
hello spark

除了以上方法外,也可以参考1-1节中介绍的其它方法。

1-1,快速搭建你的Spark开发环境


五,鼓励和联系作者

如果本书对你有所帮助,想鼓励一下作者,记得给本项目加一颗星星star ⭐️ ,并分享给你的朋友们喔 😊 !

如果对本书内容理解上有需要进一步和作者交流的地方,欢迎在公众号"算法美食屋"下留言。作者时间和精力有限,会酌情予以回复。

也可以在公众号后台回复关键字:spark加群,加入spark和大数据读者交流群和大家讨论。

image.png


Owner
lyhue1991
dream-->design-->deliever😋😋
lyhue1991
HSC4D: Human-centered 4D Scene Capture in Large-scale Indoor-outdoor Space Using Wearable IMUs and LiDAR. CVPR 2022

HSC4D: Human-centered 4D Scene Capture in Large-scale Indoor-outdoor Space Using Wearable IMUs and LiDAR. CVPR 2022 [Project page | Video] Getting sta

51 Nov 29, 2022
The source code and data of the paper "Instance-wise Graph-based Framework for Multivariate Time Series Forecasting".

IGMTF The source code and data of the paper "Instance-wise Graph-based Framework for Multivariate Time Series Forecasting". Requirements The framework

Wentao Xu 24 Dec 05, 2022
MiraiML: asynchronous, autonomous and continuous Machine Learning in Python

MiraiML Mirai: future in japanese. MiraiML is an asynchronous engine for continuous & autonomous machine learning, built for real-time usage. Usage In

Arthur Paulino 25 Jul 27, 2022
Image-Scaling Attacks and Defenses

Image-Scaling Attacks & Defenses This repository belongs to our publication: Erwin Quiring, David Klein, Daniel Arp, Martin Johns and Konrad Rieck. Ad

Erwin Quiring 163 Nov 21, 2022
Unsupervised Representation Learning via Neural Activation Coding

Neural Activation Coding This repository contains the code for the paper "Unsupervised Representation Learning via Neural Activation Coding" published

yookoon park 5 May 26, 2022
A Pytorch Implementation of ClariNet

ClariNet A Pytorch Implementation of ClariNet (Mel Spectrogram -- Waveform) Requirements PyTorch 0.4.1 & python 3.6 & Librosa Examples Step 1. Downlo

Sungwon Kim 286 Sep 15, 2022
xitorch: differentiable scientific computing library

xitorch is a PyTorch-based library of differentiable functions and functionals that can be widely used in scientific computing applications as well as deep learning.

24 Apr 15, 2021
Code for "FPS-Net: A convolutional fusion network for large-scale LiDAR point cloud segmentation".

FPS-Net Code for "FPS-Net: A convolutional fusion network for large-scale LiDAR point cloud segmentation", accepted by ISPRS journal of Photogrammetry

15 Nov 30, 2022
PSANet: Point-wise Spatial Attention Network for Scene Parsing, ECCV2018.

PSANet: Point-wise Spatial Attention Network for Scene Parsing (in construction) by Hengshuang Zhao*, Yi Zhang*, Shu Liu, Jianping Shi, Chen Change Lo

Hengshuang Zhao 217 Oct 30, 2022
Codebase for ECCV18 "The Sound of Pixels"

Sound-of-Pixels Codebase for ECCV18 "The Sound of Pixels". *This repository is under construction, but the core parts are already there. Environment T

Hang Zhao 318 Dec 20, 2022
Reference implementation for Deep Unsupervised Learning using Nonequilibrium Thermodynamics

Diffusion Probabilistic Models This repository provides a reference implementation of the method described in the paper: Deep Unsupervised Learning us

Jascha Sohl-Dickstein 238 Jan 02, 2023
Evolutionary Population Curriculum for Scaling Multi-Agent Reinforcement Learning

Evolutionary Population Curriculum for Scaling Multi-Agent Reinforcement Learning This is the code for implementing the MADDPG algorithm presented in

97 Dec 21, 2022
Official Pytorch implementation of Scene Representation Networks: Continuous 3D-Structure-Aware Neural Scene Representations

Scene Representation Networks This is the official implementation of the NeurIPS submission "Scene Representation Networks: Continuous 3D-Structure-Aw

Vincent Sitzmann 365 Jan 06, 2023
Fashion Entity Classification

Fashion-Entity-Classification - Fashion-MNIST is a dataset of Zalando's article images—consisting of a training set of 60,000 examples and a test set of 10,000 examples. Each example is a 28x28 grays

ADITYA SHAH 1 Jan 04, 2022
Code for the paper "On the Power of Edge Independent Graph Models"

Edge Independent Graph Models Code for the paper: "On the Power of Edge Independent Graph Models" Sudhanshu Chanpuriya, Cameron Musco, Konstantinos So

Konstantinos Sotiropoulos 0 Oct 26, 2021
[CVPR2022] Representation Compensation Networks for Continual Semantic Segmentation

RCIL [CVPR2022] Representation Compensation Networks for Continual Semantic Segmentation Chang-Bin Zhang1, Jia-Wen Xiao1, Xialei Liu1, Ying-Cong Chen2

Chang-Bin Zhang 71 Dec 28, 2022
git《Beta R-CNN: Looking into Pedestrian Detection from Another Perspective》(NeurIPS 2020) GitHub:[fig3]

Beta R-CNN: Looking into Pedestrian Detection from Another Perspective This is the pytorch implementation of our paper "[Beta R-CNN: Looking into Pede

35 Sep 08, 2021
Efficient Training of Visual Transformers with Small Datasets

Official codes for "Efficient Training of Visual Transformers with Small Datasets", NerIPS 2021.

Yahui Liu 112 Dec 25, 2022
NCNN implementation of Real-ESRGAN. Real-ESRGAN aims at developing Practical Algorithms for General Image Restoration.

NCNN implementation of Real-ESRGAN. Real-ESRGAN aims at developing Practical Algorithms for General Image Restoration.

Xintao 593 Jan 03, 2023
Official repository for the CVPR 2021 paper "Learning Feature Aggregation for Deep 3D Morphable Models"

Deep3DMM Official repository for the CVPR 2021 paper Learning Feature Aggregation for Deep 3D Morphable Models. Requirements This code is tested on Py

38 Dec 27, 2022