hortonworks hadoop

Hadoop cannot be started properly (1) Failed to start after executing $ bin/hadoop start-all.sh. Exception 1 Exception in thread "Main" Java. Lang. illegalargumentexception: Invalid URI for namenode address (check fs. defaultfs): file: // has no authority. Localhost: At org. Apache. hadoop. HDFS. server. namenode. namenode. getaddress (namenode. Java: 214) Localh

First explain the configured environmentSystem: Ubuntu14.0.4Ide:eclipse 4.4.1Hadoop:hadoop 2.2.0For older versions of Hadoop, you can directly replicate the Hadoop installation directory/contrib/eclipse-plugin/hadoop-0.20.203.0-eclipse-plugin.jar to the Eclipse installation directory/plugins/ (and not personally verified). For HADOOP2, you need to build the jar f

Introduction HDFs is not good at storing small files, because each file at least one block, each block of metadata will occupy memory in the Namenode node, if there are such a large number of small files, they will eat the Namenode node's large amount of memory. Hadoop archives can effectively handle these issues, he can archive multiple files into a file, archived into a file can also be transparent access to each file, and can be used as a mapreduce

in ~/.ssh/: Id_rsa and id_rsa.pub; These two pairs appear, similar to keys and locks.Append the id_rsa.pub to the authorization key (there is no Authorized_keys file at this moment)$ cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys(3) Verify that SSH is installed successfullyEnter SSH localhost. If the display of a native login succeeds, the installation is successful.3. Close the firewall $sudo UFW disableNote: This step is very important, if you do not close, there will be no problem finding D

As you know, Namenode has a single point of failure in the Hadoop system, which has been a weakness for high-availability Hadoop. This article discusses several solution that exist to solve this problem. 1. Secondary NameNode principle: secondary NN periodically reads the editlog from the NN, merging with the image that it stores to form a new metadata image advantage: The earlier version of

As a matter of fact, you can easily configure the distributed framework runtime environment by referring to the hadoop official documentation. However, you can write a little more here, and pay attention to some details, in fact, these details will be explored for a long time. Hadoop can run on a single machine, or you can configure a cluster to run on a single machine. To run on a single machine, you only

page opened for the link:Determine the proper shim for Hadoop distro and version probably means choosing the right package for the Hadoop version. One line above the table: Apache, Cloudera, Hortonworks, Intel, mapr refer to the issuer. Click on them to select the publisher of the Hadoop you want to connect to. Take A

installation and deployment notes-HBase full distribution mode installation Detailed tutorial on creating HBase environment for standalone Edition Reference documentation (hortonworks will be short for hdp; cloudera is cdh ): 1. Create a system template. Because I found the centos6.5 template in openvz, we tried to keep it consistent with production in the test environment, so we should use CentOS6.3, note automatically according to the official docu

Hadoop In The Big Data era (1): hadoop Installation If you want to have a better understanding of hadoop, you must first understand how to start or stop the hadoop script. After all,Hadoop is a distributed storage and computing framework.But how to start and manage t

I built a Hadoop2.6 cluster with 3 CentOS virtual machines. I would like to use idea to develop a mapreduce program on Windows7 and then commit to execute on a remote Hadoop cluster. After the unremitting Google finally fixI started using Hadoop's Eclipse plug-in to execute the job and succeeded, and later discovered that MapReduce was executed locally and was not committed to the cluster at all. I added 4 configuration files for

We all know that an address has a number of companies, this case will be two types of input files: address classes (addresses) and company class (companies) to do a one-to-many association query, get address name (for example: Beijing) and company name (for example: Beijing JD, Beijing Associated information for Red Star).Development environmentHardware environment: Centos 6.5 server 4 (one for master node, three for slave node)Software Environment: Java 1.7.0_45,

Various tangle period Ubuntu installs countless times Hadoop various versions tried countless times tragedy then see this www.linuxidc.com/Linux/2013-01/78391.htm or tragedy, slightly modifiedFirst, install the JDK1. Download and installsudo apt-get install OPENJDK-7-JDKRequired to enter the current user password when entering the password, enter;Required input yes/no, enter Yes, carriage return, all the way down the installation completed;2. Enter ja

Preface After a while of hadoop deployment and management, write down this series of blog records. To avoid repetitive deployment, I have written the deployment steps as a script. You only need to execute the script according to this article, and the entire environment is basically deployed. The deployment script I put in the Open Source China git repository (http://git.oschina.net/snake1361222/hadoop_scripts ). All the deployment in this article is b

ObjectiveWhat is Hadoop?In the Encyclopedia: "Hadoop is a distributed system infrastructure developed by the Apache Foundation." Users can develop distributed programs without knowing the underlying details of the distribution. Take advantage of the power of the cluster to perform high-speed operations and storage. ”There may be some abstraction, and this problem can be re-viewed after learning the various

Tossing for two days, holding the spirit of not giving up, I finally compiled my own need for Hadoop in the Eclipse plug-inDownload on the Internet may be due to version inconsistencies, there are a variety of issues during compilation, including your Eclipse version and Hadoop version, JDK version, ant versionSo download a few, at least 19, but has not been successful, has been unable to find the package e

PHP can connect hbase via thrift, and PHP can also read Hadoop resources (HDFS resources) through thrift. Get ready: PHP needs a thrift libary packages:hadoop-0.20.2\src\contrib\thriftfs\gen-php Source: $globals [' thrift_root '] = RootPath. '/lib/thrift '; Require_once ($globals [' Thrift_root ']. /thrift.php '); Require_once ($globals [' Thrift_root ']. /transport/tsocket.php '); Require_once ($globals [' Thrift_root ']. /transport/tbufferedtranspor