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This article mainly introduces how to compile hadoop 2.7 on CentOS, the article is very detailed, has a certain reference value, interested friends must read it!

Official website download hadoop execution run alarm:

WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

put: `./ in': No such file or directory

Native-hadoop under lib is mainly 32-bit, so here we compile hadoop on 64-bit systems ourselves.

Environmental preparation:

1 Download hadoop src Source Package

2 Required software: java, svn, autoconf, automake, libtool, ncurses-devel, openssl-devel, gcc, lzo-devel, zlib-devel, znt, maven, protobuf, cmake

yum -y install autoconf automake libtool ncurses-devel openssl-devel gcc lzo-devel, zlib-devel cmake

3 Install JDK

Download jdk bin package and extract it

Add jdk environment variable

Add to/etc/profile file

## JAVA

export JAVA_HOME=/usr/local/java/jdk

export CLASSPATH=.:$ JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

## PATH

export PATH=$JAVA_HOME/bin

Let overload environment variables. /etc/profile

4 maven installation

Download maven and extract it, then add its bin path to the environment variable

mvn -version

5 protobuf installation

Go online and search for protobuf-2.5.0.tar.gz, download and extract,

./ configure; make; make install

protoc --version

6 ANT Installation

apache official website download ANT bin package decompression, add its bin path to the environment variable

7 Compile hadoop

mvn package -Pdist,native,docs -DskipTests -Dtar

This takes more than an hour or more and requires networking to download dependency packages

The last file is in hadoop-2.7.2-src/hadoop-dist/target

You can deploy it directly with the hadoop-2.7.2 directory, and there is also a hadoop-2.7.2.tar.gz package

The above is all the content of this article "How to compile hadoop 2.7 on CentOS", thank you for reading! Hope to share the content to help everyone, more relevant knowledge, welcome to pay attention to the industry information channel!

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