This is the documentation for CDH 5.1.x. Documentation for other versions is available at Cloudera Documentation.
Installing Snappy
Snappy is provided in the hadoop package along with the other native libraries (such as native gzip compression).
If you install Hadoop from a tarball, Snappy may not work, because the Snappy native library may not be compatible with the version of Linux on your system. If you want to use Snappy, install CDH 5 from the Red Hat or Debian packages.
To take advantage of Snappy compression you need to set certain configuration properties, which are explained in the following sections.
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