hadoop installation

Recently, the company has taken over a new project and needs to perform distributed crawling on the entire wireless network of the company. The webpage index is updated and the PR value is calculated. Because the data volume is too large (tens of millions of data records ), you have to perform distributed processing. The new version is ready to adopt the hadoop architecture. The general process of hadoop co

Sqoop is a tool used to transfer data from Hadoop and relational databases to the HDFS of a relational database (such as MySQL, Oracle, Postgres, etc.). HDFs data can also be directed into a relational database. One of the highlights of Sqoop is the fact that you can import data from a relational database to HDFs via Hadoop MapReduce. I. Installation of Sqoop1,

First, install Java 1. Download jdk-8u91-linux-x64.tar.gz file, the website is: http://www.oracle.com/technetwork/java/javase/downloads/index.html 2. Installation: #选择一个安装路径, I chose/opt and copied the downloaded jdk-8u91-linux-x64.tar.gz file to this folder $ cd/opt $ sudo cp ~/downloads/jdk-8u91-linux-x64.tar.gz-i/opt/ #解压, installation $ sudo tar zxvf jdk-8u91-linux-x64.tar.gz $ sudo rm-r jdk-8u91-linux-

Although the overall implementation of the automatic installation, but there are many needs to improve the place, such as:1. The code can only be run under the root authority, otherwise it will be wrong, this need to add permission to judge;2. You can also add several functions to reduce code redundancy;3. Some of the judgements are not intelligent enough;......The ability and the time are limited, can only write here.The Installhadoop file code is as

2017/6/21 Update after installation, create the logs folder under the/usr/local/hadoop/hadoop-2.7.3 path and change the permissions to 777 9-26 Important updates: All the commands in this article are from the real machine copy, may be in the process of pasting copy of the unknown error, so please manually enter the command, thank you. Recently listened to a big

to/usr/local, rename hadoop-2.7.3 to Hadoop, and set access permissions for/usr/local/hadoop. cd/usr/local sudo mv hadoop-2.7.3 hadoop sudo chmod 777/usr/local/hadoop(2) Configuring the. bashrc file sudo vim ~/.BASHRC (if Vim is

First, install Java1. Download the jdk-8u91-linux-x64.tar.gz file at:http://www.oracle.com/technetwork/java/javase/downloads/index.html2. Installation:#选择一个安装路径, I chose/opt and copied the downloaded jdk-8u91-linux-x64.tar.gz file to this folder$ cd/opt$ sudo cp ~/downloads/jdk-8u91-linux-x64.tar.gz-i/opt/#解压, installation$ sudo tar zxvf jdk-8u91-linux-x64.tar.gz$ sudo rm-r jdk-8u91-linux-x64.tar.gz#检查是否安装成

Original: http://blog.anxpp.com/index.php/archives/1036/ Hadoop single node mode installation Official Tutorials: http://hadoop.apache.org/docs/r2.7.3/ This article is based on: Ubuntu 16.04, Hadoop-2.7.3 One, overview This article refers to the official documentation for the installation of

CentOS-64bit compile Hadoop-2.5. source code and perform distributed Installation Summary CentOS7-64bit compilation Hadoop-2.5.0 and distributed Installation Directory 1. System Environment Description 2. Preparations before installation 2.1 disable Firewall 2.2 chec

Turn from: http://www.cyblogs.com/My own blog ~ first of all, we need 3 machines, and here I created 3 VMs in VMware to ensure my hadoop is fully distributed with the most basic configuration. I chose the CentOS here because the Redhat series, which is popular in the enterprise comparison. After the installation, the final environmental information: IP Address H1H2h3 Here is a small question to see, is to

Hadoop version: hadoop-2.5.1-x64.tar.gz The study referenced the Hadoop build process for the two nodes of the http://www.powerxing.com/install-hadoop-cluster/, I used VirtualBox to open four Ubuntu (version 15.10) virtual machines, build four nodes of the Hadoop distributed

Recently combined with specific projects, set up Hadoop+hive, before running Hive to first set up a good Hadoop, about the construction of Hadoop has three models, in the following introduction, I mainly used the pseudo distribution of Hadoop installation mode. Write it down

Installation environment: Ubuntu Kylin 14.04 haoop-1.2.1 HADOOP:HTTP://APACHE.MESI.COM.AR/HADOOP/COMMON/HADOOP-1.2.1/1. To install the JDK, it is important to note that in order to use Hadoop, you need to enter a command under Hadoop:source/etc/profile to implement it, and then use java-version Test to see if it takes

SummaryCentos7-64bit compiled Hadoop-2.5.0, and distributed installationCatalogue [-] 1. System Environment Description 2. Pre-installation preparations 2.1 Shutting down the firewall 2.2 Check SSH installation, if not, install SSH 2.3 Installing VIM 2.4 Setting a static IP address 2.5 Modifying the host name 2.6 Creating a

Environment: Ubuntu10.10JDK1.6.0.27hadoop0.20.2 I. JDK installation in Ubuntu: 1. download jdk-6u27-linux-i586.bin2. copy to usrjava and set object operation permissions. $. jdk-6u27-linux-i586.bin start installation 4. set the environment variable vietcprofile and add JAVA_HOME at the end of the file. Environment: Ubuntu 10.10 JDK1.6.0.27 hadoop 0.20.2 1. Instal

want to do this, you can also add sudo before using the command.4. Install JavaDownload and unzip the jdk-7u51-linux-i586.tar.gz to/usr directory, rename the folder to the JVM, open the terminal, enter the command vim/etc/profile edit the environment variable, and add the following statement at the end:e xport JAVA_HOME=/USR/JVMExport classpath=.: $JAVA _home/lib/dt.jar: $JAVA _home/lib/tools.jar: $JAVA _home/lib: $CLASSPATHExport path= $JAVA _home/bin: $PATHExit after saving, and then enter So

: Hadoop jar/usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-examples-*.jar grep input Output ' dfs[a-z. + ' Wait for the output to complete after execution:Hadoop Start command: start-dfs.shstart-yarn.shmr-jobhistory-daemon.sh start Historyserverhadoop shutdown command: stop-dfs.shstop-yarn.shmr-jobhistory-da