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
Tags: for IDE grep package Technology share mapper data [] MainMac under Hadoop run Word Count's pitWord Count embodies the classic idea of map reduce, which is the Hello World in distributed computing. However, the blogger was fortunate to have encountered a problem peculiar to the Mac Mkdirs failed to create, hereby recordedOne, the code
Wcmapper.java
Package WordCount;import org.apache.hado
This article describes how to use intellij idea to package a project, that is, to package a jar package.
Environment: Mac OS X 10.9.5, intellij idea 13.1.4, hadoop 1.2.1
Hadoop is stored in a virtual machine. The host machine is connected through SSH, And the IDE and data files are stored in the host machine. Idea runs on JDK 1.8 and uses JDK 1.6 for idea enginee
Tags: security config virtual machine Background decryption authoritative guide will also be thought also needTo learn more about Hadoop data analytics, the first task is to build a Hadoop cluster environment, simplifying Hadoop as a small software, and then running it as a Hadoop distributed cluster by installing the
This article describes the resolution process for job recalculation when submitting jobs in CentOS 6.5 to Hadoop 1.2.1 encountered Error:java heap space errors in the reduce phase. Workaround for Linux, Mac os X, and Windows operating systems.Environment: Mac OS X 10.9.5, IntelliJ idea 13.1.4, Hadoop 1.2.1Hadoop is pla
This article describes how to use filesystem. copyfromlocalfile in intellij idea to operate hadoop. Permission denied is caused by incorrect URI format.
Environment: Mac OS X 10.9.5, intellij idea 13.1.4, hadoop 1.2.1
Hadoop is stored in a virtual machine. The host machine is connected through SSH, And the IDE and data
MySQL is troublesome, because in Mac OS is directly with Apache and PHP, so install them, relatively simple, and MySQL is not with, we need to download the official website.
After the download is complete, install it directly. After the installation is complete, System Preferences start the MySQL service from within as shown in:
OK, now log in from the command
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
variablesConfigure the Hadoop environment variable in the. bash_profile file and use Vim to open the file and enter edit modeVim ~/.bash_profileIn this file, addExport hadoop_home=/users/fengzhen/desktop/hadoop/hadoop-2.8.0 Here is the installation path for HADOOP export path= $PATH: $
First, a brief introduction of the next blogger's configuration environment
MAC 10.10.0
Hadoop 2.6
JDK 1.6 (can be queried in the shell using jdk-version)
Hadoop installationIt is recommended to use the brew under the MAC for installation, the reason is to use brew installation, it will automatica
This series of articles describes how to install and configure hadoop in full distribution mode and some basic operations in full distribution mode. Prepare to use a single-host call before joining the node. This article only describes how to install and configure a single node.
1. Install Namenode and JobTracker
Thi
Install Grunt on Mac, and install grunt on mac
Step 1: Install brew
Go to http://bremongosh/ brewhome and install the command.
Step 2: Install node
After the installation is succe
CentOS6.5 install Hadoop
Hadoop implements a Distributed File System (HDFS. HDFS features high fault tolerance and is designed to be deployed on low-cost hardware. It also provides high throughput to access application data, suitable for applications with large data sets. HDFS relaxed (relax) POSIX requirements and allows you to access data in a streaming acces
--mac Install Alipay control steps
First step, use Safari to install.
Then we're in Alipay official to download a Mac version Alipay security control
The second step, after installation, we click on "Install Now" then you can pay the security control directly.The browser
1, first download a good Windows 2000 system ISO image files to the desktop, start Paralells Desktop virtual machine, new virtual machine.
2. If the parallels Desktop is not installed, please download parallels Desktop and install it first. If you have already installed parallels, run the parallels Desktop for Mac directly, and according to the Parallels Wizard, create a new virtual machine and choose
Install and configure hadoop, jdk, Hbase, and phoenix in the pseudo-distributed environment under Ubuntu16.04, and set up hadoophbase
I. Preparations
Installation Package link: https://pan.baidu.com/s/1i6oNmOd password: i6nc
Environment preparation
Modify hostname:
$ Sudo vi/etc/hostname
Why
Modify the IP Address:
$ Sudo vi/etc/network/interfaces
Auto eth0
Iface eth0 inet static
Address 192.16.13.11
Netmask
Mac OS X maven compiled spark-2.1.0 for hadoop-2.8.01. The official documentation requires the installation of Maven 3.3.9+ and Java 8;2. Implementation Export maven_opts= "-xmx2g-xx:reservedcodecachesize=512m"3.CD spark2.1.0 Source root directory./build/mvn-pyarn-phadoop-2.8-dhadoop.version=2.8.0-dscala-2.11-phive-phive-thriftserver-dskiptests Clean Package4 Switch to the compiled dev directory and execute
command:3) Cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keysThis passage means that the public key is added to the public key file for authentication, where the Authorized_keys is the public key file for authentication. At this point no password login This machine has been set up.4) You can now log in to SSH to confirm that you do not need to enter a password:~$ ssh localhost logout:~$ exit the second time login:~$ ssh localhostLog out:~$ exitThis way, you don't have to enter a password to log in
0. Install XubuntuWe recommend to set username as "Hadoop"After installation, set user "Hadoop" as Administratorsudo addgroup Hadoop Open/etc/sudoers Filesudo gedit/etc/sudoersAdd Hadoop all= (All:all) all under root all= (All:all) all1.
When simplifying the code associated with a single table in MySQL 2nd (version 5.4), Lu xiheng encountered a null pointing exception. After analysis, it was a logic problem and we made a record here.
Environment: Mac OS X 10.9.5, intellij idea 13.1.5, hadoop 1.2.1
The modified code is as follows. In the reduce stage, nullpointerexception is encountered.
1 public class STjoinEx { 2 private static final
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