free hadoop cluster

This article assumes that users have a basic understanding of Docker, Master Linux basic commands, and understand the general installation and simple configuration of Hadoop.Lab Environment: windows10+vmware WorkStation 11+linux.14.04 server+docker 1.7 windows 10 as the physical machine operating system, the network segment is: 10.41.0.0/24, the virtual machine uses the NAT network, the subnet is the 192.168.92.0/ 24, the gateway is 192.168.92.2,linux 14.04 for the virtual system, as a host for

* /public void init (jobconf conf) throws IOException { setconf (conf); cluster = new cluster (conf); Clientugi = Usergroupinformation.getcurrentuser (); } This is still the jobclient of the MR1 era, in/usr/lib/hadoop-mapreduce/hadoop-mapreduce-client-core-2.0.0-cdh4.5.0.jar And/usr/lib/

Install and configure Sqoop for MySQL in the Hadoop cluster environment, Sqoop is a tool used to transfer data from Hadoop to relational databases. It can import data from a relational database (such as MySQL, Oracle, and S) into Hadoop HDFS, you can also import HDFS data to a relational database. One of the highlights

configured for yarn13, modify the Etc/hadoop/yarn-site.xml configuration file, add the following information.VI Yarn-site.xmlin order to be able to run MapReduce program, we need to get . Nodemanger Load at startup Shuffle . So the following settings are required14, modify the Etc/hadoop/slaves, add the following information. That is, slaves fileVI Slavesis now a pseudo-distributed single-node

Directory structure: Hadoop cluster (CDH4) practices (0) preface Hadoop cluster (CDH4) Practices (1) Hadoop (HDFS) Build Hadoop cluster (CDH4) practices (2) build

Directory structure: Hadoop cluster (CDH4) practices (0) preface Hadoop cluster (CDH4) Practices (1) Hadoop (HDFS) Build Hadoop cluster (CDH4) practices (2) build

VM Virtual MachinesConfiguration:NAT Network Configuration Reference: http://www.cnblogs.com/gongice/p/4337379.html install pre-Hadoop equipment (on each host): Configure sudo (optional):[[email protected] Hadoop] # chmod u+w/etc/sudoers [[email protected] Hadoop] # vi/etc/sudoersAdd a row of data:Hadoop all= (All) Nopasswd:all，HadoopFor sudo password-

Use yum source to install the CDH Hadoop Cluster This document mainly records the process of using yum to install the CDH Hadoop cluster, including HDFS, Yarn, Hive, and HBase.This article uses the CDH5.4 version for installation, so the process below is for the CDH5.4 version.0. Environment Description System Environm

Org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer.doTailEdits (Editlogtailer.java:216) at Org.apache.hadoop.hdfs.server.namenode.ha.editlogtailer$editlogtailerthread.dowork (EditLogTailer.java:342) at org.apache.hadoop.hdfs.server.namenode.ha.editlogtailer$editlogtailerthread.access$ $(Editlogtailer.java:295) at org.apache.hadoop.hdfs.server.namenode.ha.editlogtailer$editlogtailerthread$1. Run (Editlogtailer.java:312) at Org.apache.hadoop.security.SecurityUtil.doAsLoginUserOrFatal (Securi

. -Configuration> Property> name>Fs.default.namename> value>hdfs://localhost:9000value> Property> Property> name>Hadoop.tmp.dirname> value>/home/hadoop/hadoop_tmpvalue> Description>A base for other temporary directories.Description> Property>Configuration>Hdfs-site.xml:XML version= "1.0"?>xml-stylesheet type= "text/xsl" href= "configuration.xsl "?>Put Site-specific property overri

Build the Hadoop 2.6.3 fully distributed environment on the CentOS 6.7 x64 and test successfully on the Digitalocean.This article assumes:Master node (NameNode) domain name (hostname): m.fredlab.org child node (DataNode) domain name (hostname): s1.fredlab.org s2.fredlab.org s3.fredlab.orgFirst, configure SSH Trust1. Generate public private key on Master machine: Id_rsa and Id_rsa.pubSsh-keygen2

After more than a week, I finally set up the latest version of Hadoop2.2 cluster. During this period, I encountered various problems and was really tortured as a cainiao. However, when wordcount gave the results, I was so excited ~~ (If you have any errors or questions, please correct them and learn from each other) In addition, you are welcome to leave a message when you encounter problems during the configuration process and discuss them with each o

/download/lzo-2.04.tar.gz Tar-zxvf lzo-2.04.tar.gz ./Configure -- Enable-Shar Ed Make Make install Library files are installed in the/usr/local/lib directory by default. Any of the following operations is required: A. Copy the lzo library in the/usr/local/lib directory to/usr/lib [/usr/lib64] According to the system's decision. B. Create the lzo. conf file under the/etc/ld. so. conf. d/directory, write the path of the file into the database, and run/sbin/ldconfig-v to make the configu

, more than 1GB is recommended./home: The data for ordinary users is the host directory of ordinary users, the recommended size is the remaining space./: The root directory of the Linux system, all directories are hung under this directory, the recommended size is more than 5GB./ tmp: The temporary disk in a separate partition, you can avoid the system when the file system is full of stability affected. The recommended size is above 500MB.Swap: Implements virtual memory, the recommended size is

benchmarks-such as the ones described next-you can "burn in" The cluster before it goes live. Hadoop benchmarks Hadoop comes with several benchmarks that you can run very easily with minimal setup cost. benchmarks are packaged in the test JAR file, and you can get a list of them, with descriptions, by invoking the JAR file with no arguments: %

Introduction Recently, with the need for scientific research, Hadoop clusters have been built from scratch, including separate zookeeper and HBase. For Linux, Hadoop and other related basic knowledge is relatively small, so this series of sharing applies to a variety of small white, want to experience the Hadoop cluster