Snappy Installation on Ubuntu

Snappy Installation on Ubuntu:

1.  g++, make and build-essential packages should have been installed prior to installation of snappy.

Installing these packages ,follow the below commands in the same order.

$ sudo apt-get update
$ sudo apt-get install g++ make build-essential

Download snappy tar ball from http://google.github.io/snappy/

issue below commands from terminal in the same order from the folder of snappy.
 $  ./configure
$  make
$  sudo make install

Snappy Compression Configuration For Hadoop:

Solution:
After installation of snappy on Ubuntu, we need to copy the libsnappy*.so* files from /usr/local/lib into $HADOOP_HOME/lib/native/ library location and need to set LD_LIBRARY_PATH , JAVA_LIBRARY_PATH environment variables(Try this approach).

Otherwise the best and simple method is that, now a days, latest hadoop distributions (try this hadoop-3.0.0-alpha4) are coming with snappy installed already. We cam copy all lib*.* files from latest/lib/native/ directory into our hadoop native library $HADOOP_HOME/lib/native/ location.



Define these two environment variables in .bashrc file.

export LD_LIBRARY_PATH="$HADOOP_HOME/lib/native/"
export JAVA_LIBRARY_PATH="$HADOOP_HOME/lib/native/"

Add below property into core-site.xml:
<property>
    <name>io.compression.codecs</name>
    <value>
      org.apache.hadoop.io.compress.GzipCodec,
      org.apache.hadoop.io.compress.DefaultCodec,
      org.apache.hadoop.io.compress.BZip2Codec,
      org.apache.hadoop.io.compress.SnappyCodec
    </value>
</property>

Restart the hadoop and try

Gpt info and thanks to site ==> http://hadooptutorial.info/snappy-compressiondecompression-tool/