apache hadoop

last command executes the installation, and if an error occurs, restart it.Test whether the installation is successful after execution completesProtoc--version5) Install CMake, openssl-develCMake requires more than 2.6 of the version, in the installation will be prompted to enter the y/n, and because the installation of this component is required to network, so according to different speed, the installation progress is not the sameYum install cmake yum install Openssl-develyum install Ncurse

Exception Analysis 1. "cocould only be replicated to 0 nodes, instead of 1" Exception (1) exception description The configuration above is correct and the following steps have been completed: [Root @ localhost hadoop-0.20.0] # bin/hadoop namenode-format [Root @ localhost hadoop-0.20.0] # bin/start-all.sh At this time, we can see that the five processes jobtracke

Install times wrong: Failed to execute goal org.apache.maven.plugins:maven-antrun-plugin:1.7:run (site) on project Hadoop-hdfs:an Ant B Uildexception has occured:input file/usr/local/hadoop-2.6.0-stable/hadoop-2.6.0-src/hadoop-hdfs-project/ Hadoop-hdfs/target/findbugsxml.xml

$ hadoop jars hadoop-examples-1.2.1.jar wordcount in out Warning: $ HADOOP_HOME is deprecated. 14/09/12 08:40:39 ERROR security. UserGroupInformation: PriviledgedActionException as: hadoop cause: org. apache. hadoop. ipc. RemoteException: org.

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. name

Root @ scutshuxue-desktop:/home/root/hadoop-0.19.2 # bin/hadoop FS-put conf input10/07/18 12:31:05 info HDFS. dfsclient: Org. apache. hadoop. IPC. remoteException: Java. io. ioexception: File/user/root/input/log4j. properties cocould only be replicated to 0 nodes, instead of 1At org.

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

, have time to do the above steps again, the Datanode also made no passwordLogin Namenode, practiced hand. The steps are: in Datanode:Su-hadoop ssh-keygen-t rsa-p ' cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys SCP ~/.ssh/id_rsa.pub [email ProtectedIn Namenode:Cat ~/id_rsa.pub >> ~/.ssh/authorized_keys rm-r ~/id_rsa.pub6.Hadoop cluster installationTake Namenode as an example, the rest of the Datanode

the individual operations on each server, Because each of these operations can be a huge project. Installation Steps 1. Download Hadoop and JDK: http://mirror.bit.edu.cn/apache/hadoop/common/ such as: hadoop-0.22.0 2. Configure DNS resolution host name Note: In the production of

of confusion, to a variety of attempts, to the present combination of applications .... Things that are slowly involved in data processing are already inseparable from Hadoop. The success of Hadoop in the field of big data has led to its own accelerated growth. Now the Hadoop family of products has reached more than 20.It is necessary to do a collation of their

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

Hadoop Foundation----Hadoop Combat (vi)-----HADOOP management Tools---Cloudera Manager---CDH introduction We have already learned about CDH in the last article, we will install CDH5.8 for the following study. CDH5.8 is now a relatively new version of Hadoop with more than hadoop2.0, and it already contains a number of

[Linux] [Hadoop] Run hadoop and linuxhadoop The preceding installation process is to be supplemented. After hadoop installation is complete, run the relevant commands to run hadoop. Run the following command to start all services: hadoop@ubuntu:/usr/local/gz/

1) HDFs File System Preparation workA) # Hadoop fs–ls/user/root #查看hdfs文件系统b) # Hadoop fs-rm/user/root/output02/part-r-00000c) Delete the document, delete the folderd) # Hadoop fs-rm–r/user/root/output02e) # Hadoop fs–mkdir–p INPUT/NCDCf) Unzip the input file and Hadoop does

Previously introduced me in Ubuntu under the combination of virtual machine Centos6.4 build hadoop2.7.2 cluster, in order to do mapreduce development, to use eclipse, and need the corresponding Hadoop plugin Hadoop-eclipse-plugin-2.7.2.jar, first of all, in the official Hadoop installation package before hadoop1.x with Eclipse Plug-ins, And now with the increase

Hadoop 2.30TAR-XZVF hadoop-2.3.0-src.tar.gz5. Go to the Hadoop 2.30 folderCD HADOOP-2.3.0-SRC6. Compiling Hadoop 2.30 source filesMVN Package-pdist,native-dskiptests–dtarThe results of the correct execution are as follows:[INFO]----------------------------------------------

://archive.apache.org/dist/hadoop/core/hadoop-2.3.0/hadoop-2.3.0-src.tar.gz4. Extract the source package from Hadoop 2.30TAR-XZVF hadoop-2.3.0-src.tar.gz5. Go to the Hadoop 2.30 folderCD HADOO