文件名称:
Elasticsearch for Hadoop
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文件大小: 1mb
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上传时间: 2018-11-27
详细说明： Table of Contents Elasticsearch for Hadoop Credits About the Author About the Reviewers www.PacktPub.com Support files, eBooks, discount offers, and more Why subscribe? Free access for Packt account holders Preface What this book covers What you need for this book Who this book is for Conventions Reader feedback Customer support Downloading the example code Downloading the color images of this book Errata Piracy Questions 1. Setting Up Environment Setting up Hadoop for Elasticsearch Setting up Java Setting up a dedicated user Installing SSH and setting up the certificate Downloading Hadoop Setting up environment variables Configuring Hadoop Configuring core-site.xml Configuring hdfs-site.xml Configuring yarn-site.xml Configuring mapred-site.xml The format distributed filesystem Starting Hadoop daemons Setting up Elasticsearch Downloading Elasticsearch Configuring Elasticsearch Installing Elasticsearch's Head plugin Installing the Marvel plugin Running and testing Running the WordCount example Getting the examples and building the job JAR file Importing the test file to HDFS Running our first job Exploring data in Head and Marvel Viewing data in Head Using the Marvel dashboard Exploring the data in Sense Summary 2. Getting Started with ES-Hadoop Understanding the WordCount program Understanding Mapper Understanding the reducer Understanding the driver Using the old API – org.apache.hadoop.mapred Going real — network monitoring data Getting and understanding the data Knowing the problems Solution approaches Approach 1 – Preaggregate the results Approach 2 – Aggregate the results at query-time Writing the NetworkLogsMapper job Writing the mapper class Writing Driver Building the job Getting the data into HDFS Running the job Viewing the Top N results Getting data from Elasticsearch to HDFS Understanding the Twitter dataset Trying it yourself Creating the MapReduce job to import data from Elasticsearch to HDFS Writing the Tweets2Hdfs mapper Running the example Testing the job execution output Summary ... ...展开详情收缩
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