Time for action – downloading Hadoop
Carry out the following steps to download Hadoop:
- Go to the Hadoop download page at http://hadoop.apache.org/common/releases.html and retrieve the latest stable version of the 1.0.x branch; at the time of this writing, it was 1.0.4.
- You'll be asked to select a local mirror; after that you need to download the file with a name such as
hadoop-1.0.4-bin.tar.gz. - Copy this file to the directory where you want Hadoop to be installed (for example,
/usr/local), using the following command:$ cp Hadoop-1.0.4.bin.tar.gz /usr/local - Decompress the file by using the following command:
$ tar –xf hadoop-1.0.4-bin.tar.gz - Add a convenient symlink to the Hadoop installation directory.
$ ln -s /usr/local/hadoop-1.0.4 /opt/hadoop ...
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