hadoop shell commands

found (required by /usr/local/hadoop-2.5.1/lib/native/libhadoop.so.1.0.0)14/10/08 11:17:56 DEBUG util.NativeCodeLoader: java.library.path=/usr/local/hadoop-2.5.1/lib/native14/10/08 11:17:56 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable14/10/08 11:17:56 DEBUG security.JniBasedUnix

Tags: mod file copy ima time LSP tab version Execute file cinSince HDFs is a distributed file system for accessing data, the operation of HDFs is the basic operation of the file system, such as file creation, modification, deletion, modification permissions, folder creation, deletion, renaming, etc. The operations command for HDFS is similar to the operation of the Linux shell on files such as LS, mkdir, RM, and so on.When we do the following, make su

PHP calls the shell to upload local files into Hadoop's HDFs Originally used to upload thrift, but its low upload efficiency, another person heinous, had to choose other methods. ? Environment: PHP operating Environment for Nginx + PHP-FPM ? Because Hadoop has permission control enabled, there is no permission to use PHP directly to invoke Shel for uploading. The PHP execution command appears to be n

Some commands are often used and recorded in an article for reference. This article is often updated. Shell Command: linux Command for counting the number of lines of all files in a directory findhomecrazyant-typef-name * | xargscat | wc-l use find to find the total number of lines of all text files in the crazyant directory. However, the command execution is slow. Some

Share a shell script executed by your own Hadoop, But for those who write shell scripts, it's not going to work. People who can't write shell scripts seem to be confused. If you are interested in learning, you can contact in private. As for The related files (source code/compile.sh) involved in the script could not be

1.php Code (index.php)2.shell Code (hadoop.sh)#!/bin/bashecho "WordCount test Start" Rm-rf ~/file_20141024mkdir ~/file_20141024cd ~/file_20141024echo "Hello World" Gt File1.txtecho "Hello China Beijing" > File2.txtcd/home/work/hadoop/bin/hadoop dfs-rmr input_20141024./hadoop dfs-r Mr Output_20141024./

commands in the Hadoop process:1. View the process Linux under View process: $ PS Linux View Java process: $ jps 2. View Hadoop-related commands $ hadoop (using such as: $ Hadoop namenode–format) 3. Vi

Example of the hadoop configuration file automatically configured by shell [plain] #! /Bin/bash read-p 'Please input the directory of hadoop, ex:/usr/hadoop: 'hadoop_dir if [-d $ hadoop_dir]; then echo 'yes, this directory exist. 'else echo 'error, this directory not exist. 'Exit 1 fi if [-f $ hadoop_dir/conf/core-site

Gathen: 397706991, learning together Conf/hive.xml Specific shell code Download: http://download.csdn.net/detail/luo849278597/9490920 bin/hive.sh #!/bin/bash ######################## #以下命令的处理基于Hadoop环境以及Hive工具, and the corresponding tool commands need to be defined #sed命令是Shell编程中用于处理字符串 in the environment variable,

Shell script -- run hadoop on linux terminal -- the java file is saved as test. sh. the java file is wc. java, [Note: It will be packaged into 1. jar, the main function class is wc, the input directory address on hdfs is input, and the output directory address on hdfs is output [Note: the input directory and output directory are not required] www.2cto.com run :. /test. sh wc. java wc input output [plain] #!

Filter nodes inaccessible to Hadoop using Shell scripts The hp1 cluster recently used, because the maintenance staff of the cluster is not powerful, the node will always drop one or two after a while. Today, we found that HDFS is in protection mode when Hadoop is restarted. I decided to filter out all the inaccessible nodes in the slaves node, so I wrote a smal

Shell script -- run hadoop on linux Terminal -- the java file is saved as test. sh. the java file is wc. java, [Note: it will be packaged into 1. jar, the main function class is wc, the input directory address on hdfs is input, and the output directory address on hdfs is output. [note: The input directory and output directory are not... shell script -- run

Fsck commands in Hadoop The fsck command in Hadoop can check the file in HDFS, check whether there is upt corruption or data loss, and generate the overall health report of the hdfs file system. Report content, including:Total blocks (Total number of blocks), Average block replication (Average number of copies), upt blocks, number of lost blocks,... and so on.---

1. shell script execution Method There are two ways to execute shell scripts. One is to generate a new shell and then execute the corresponding shell scripts. The other is to execute the shell in the current shell and no longer en