1 Hadoop configurationcaveats: Turn off all firewalls
server
ip
system
master
centos 6.0 X64
slave1
10.0.0.11
Centos 6.0 X64
slave2
10.0.0.12
centos 6.0 X64
Hadoop version: hadoop-0.20.2.tar.gz1.1 in master: (Operations
-volume log aggregation, which can be used for log data collection, log processing, and log transfer.
Apache giraph: is a scalable distributed iterative processing system based on the Hadoop platform, inspired by the BSP (bulk synchronous parallel) and Google Pregel.
Apache Oozie: is a workflow engine server that manages and coordinates the tasks that run on the Hadoop platform (HDFS, pig, and MapReduce
Hadoop User Experience (HUE) Installation and HUE configuration Hadoop
HUE: Hadoop User Experience. Hue is a graphical User interface for operating and developing Hadoop applications. The Hue program is integrated into a desktop-like environment and released as a web program. For individual users, no additional install
You need to download the files under the Windows version Bin directory, replacing the files in the original Bin directory under the Hadoop directory. Download URL is: https://github.com/srccodes/hadoop-common-2.2.0-binIt is also important to note that the downloaded dynamic library is 64-bit, so it must be run under a 64-bit Windows system.Copy the file under the Bin directory under this folderCopy to the b
WordCount code in Hadoop-loading Hadoop configuration files directlyIn MyEclipse, write the WordCount code directly, calling the Core-site.xml,hdfs-site.xml,mapred-site.xml configuration file directly in the codePackagecom.apache.hadoop.function;importjava.io.ioexception;importjava.util.iterator;import java.util.StringTokenizer;importorg.apache.hadoop.fs.Path;import org.apache.hadoop.io.intwritable;importor
Required SkillsSkill Requirements:Data IngestData digestion:The skills to transfer data between external systems and your cluster. This includes the following:The ability to transfer data between external systems and clusters, including the following:
Import data from a MySQL database to HDFS using SqoopImport data from MySQL to HDFs using Sqoop
Export data to a MySQL database from HDFS using SqoopImport data from HDFs to MySQL using Sqoop
Change the delimiter and file format of data dur
The hadoop release 0.20.0 API includes a brand new API: context, which is also called a context object. The design of this object makes it easier to expand in the future. Later versions of hadoop, such as 1.x, have completed most API updates. The new API type is not compatible with the previous API, so the previous application needs to be rewritten to make the new API play its role.
There are several obviou
method names and parameters as the data transmission layer. The key to remote calling is that invocation implements the writable interface. Invocation writes the called methodname to out in the write (dataoutput out) function, and writes the number of parameters of the called method to out, at the same time, the classname of the parameter is written out one by one, and all parameters are written out one by one. This determines that the parameters in the method called through RPC are either simp
Install Hadoop in standalone mode-(1) install and set up a virtual environment for hadoop StandaloneZookeeper
There are a lot of articles on how to install Hadoop in standalone mode on the network. Most of the articles that follow these steps fail, and many detours have been taken, but all the problems have been solved after all, by the way, you can record the co
Tags: mapreduce distributed storage
HDFS and mapreduce are the core of hadoop. The entire hadoop architecture is mainlyUnderlying support for distributed storage through HDFSAndProgram Support for distributed parallel task processing through mapreduce.
I. HDFS Architecture
HDFS usesMaster-slave (Master/Slave) Structure Model. An HDFS cluster is composed of one namenode and several datanod
I. Hadoop-eclipse-plugin-2.7.3.jar plugin download Click to download the plugin into the installation directory of Eclipse DropinsThird, the configuration on eclipse3.1 Opening Window-->persperctive-->other3.2 Select Map\/reduce, click OK3.3 Click the image icon to add a cluster3.4 The Hadoop cluster configuration parameters in eclipse3.5 Viewing a configured Hadoop
the RM with several HA-related options and switches the Active/standby mode. The HA command takes the RM service ID set by the Yarn.resourcemanager.ha.rm-ids property as the parameter.$ yarn rmadmin-getservicestate rm1 Active $ yarn rmadmin-getservicestate RM2 StandbyIf automatic recovery is enabled, then you can switch commands without having to manually.$ yarn Rmadmin-transitiontostandby rm1 Automatic failover is enabled for [email protected] refusing to manually manage HA State, since it cou
-generated Method StubFile docdirectory=NewFile (Docdirectorypath); if(!docdirectory.isdirectory ()) {System.out. println ("Provide an absolute path of a directory that contains the documents to be added to the sequence file"); return; } /** Sequencefile.writer sequencefilewriter = * Sequencefile.createwriter (FS, Conf, new Path (Sequencefil Epath), * text.class, Byteswritable.class); */org.apache.hadoop.io.SequenceFile.Writer.Option FilePath=sequencefile.writer. File (NewPath (Se
insideLet's modify the hostTwo comments out of the front.6. Configure the Yum source6.1 Copying filesDelete the repo file that comes with the system in the/ETC/YUM.REPOS.D directory firstWill: Create a new file: Cloudera-manager.repoTouch Cloudera-manager.repoThe contents of the file are:BaseURL back is the folder inside your var/www/html.baseurl=http://Correct the second time you do itThird Amendment[Cloudera-manager]Name=cloudera ManagerBaseURL = Http://192.168.42.99/cdh/cm5.3/packageGpgcheck
.el6.noarch.rpm/download/# Createrepo.When installing Createrepo here is unsuccessful, we put the front in Yum.repo. Delete something to restoreUseyum-y Installcreaterepo Installation TestFailedAnd then we're on the DVD. It says three copies of the installed files to the virtual machine.Install deltarpm-3.5-0.5.20090913git.el6.x86_64.rpm FirstError:Download the appropriate rpmhttp://pkgs.org/centos-7/centos-x86_64/zlib-1.2.7-13.el7.i686.rpm/download/Http://pkgs.org/centos-7/centos-x86_64/glibc-2
I was fortunate enough to take the MOOC college Hadoop experience class at the academy. This is the little Elephant College hadoop2. X Overview Notes for chapter eighthThe main introduction is HBase, a distributed database application case.Case Overview:1) Time series database (OPENTSDB) Use HBase to store time series data, every moment is resolved, the database is open source 2) hbase Crawler Scheduler Library Vertical Search Crawler Mass crawler (wh
Hadoop is a project under Apache. It consists of HDFS, mapreduce, hbase, hive, Zookeeper, and other Members. HDFS and mapreduce are two of the most basic and important members.
HDFS is an open-source version of Google gfs. It is a highly fault-tolerant distributed file system that provides high-throughput data access and is suitable for storing massive (Pb-level) data) (usually more than 64 MB), the principle is as follows:
The Master/Slave struct
;padding:0px;border:0px;background-image: none; "/>
1. The principles have been described in the diagram, not another large paragraph of text explained, 2. In the above two diagrams, except for the "actual business object class", all belong to the structure or frame part; 3. If you use OO thinking to review the above two charts, you will be complaining about the bad design, here just to describe the work of the distributed system as simple as possible, you can use the policy mode to ada
VMware has installed Multiple RedHatLinux operating systems, excerpted a lot of online materials, and installed them in order? 1. Create groupaddbigdatauseradd-gbigdatahadooppasswdhadoop? 2. Create JDKvietcprofile? ExportJAVA_HOMEusrlibjava-1.7.0_07exportCLASSPATH.
VMware has installed Multiple RedHat Linux operating systems, excerpted a lot of online materials, and installed them in order? 1. Create groupadd bigdata useradd-g bigdata hadoop passwd
Hadoop pseudo-distribution installation steps, hadoop Installation Steps2. steps for installing hadoop pseudo-distribution: 1.1 set the static IP address icon in the upper-right corner of the centos desktop, right-click to modify and restart the NIC, and run the Command service network restart for verification: ifconfig 1.2 modify the host name
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.