Installing Snappy codec

Following are the steps to install Snappy with Hbase

1.       Download Snappy http://code.google.com/p/snappy/downloads/detail?name=snappy-1.0.5.tar.gz&can=2&q=

2.       Unzip and untar  snappy.

3.       Type following command under snappy-1.05 folder ./configure; make; make install

4.       Snappy would install lib*snappy.so files under /usr/local/lib directory by default. Copy all lib*snappy*.so* files to $HADOOP_HOME/lib/native/Linux-amd64-64 dir

5.       You should see following after running ls

[hadoop@test-cluster-1 Linux-amd64-64]$ pwd

/home/hadoop/hadoop-0.20.2-hdh3u3/lib/native/Linux-amd64-64

[hadoop@test-cluster-1 Linux-amd64-64]$ ls -lrt

total 1940

-rw-rw-r-- 1 hadoop hadoop 224086 Mar 25 23:15 libhadoop.so.1.0.0

-rw-rw-r-- 1 hadoop hadoop 224086 Mar 25 23:15 libhadoop.so.1

-rw-rw-r-- 1 hadoop hadoop 224086 Mar 25 23:15 libhadoop.so

-rw-rw-r-- 1 hadoop hadoop   1171 Mar 25 23:15 libhadoop.la

-rw-rw-r-- 1 hadoop hadoop 411654 Mar 25 23:15 libhadoop.a

-rwxrwxr-x 1 hadoop hadoop    957 Jun 29 11:55 libsnappy.la

-rwxrwxr-x 1 hadoop hadoop 369308 Jun 29 11:55 libsnappy.a

-rwxrwxr-x 1 hadoop hadoop 171844 Jun 29 11:55 libsnappy.so

-rwxrwxr-x 1 hadoop hadoop 171844 Jun 29 11:55 libsnappy.so.1

-rwxrwxr-x 1 hadoop hadoop 171844 Jun 29 11:55 libsnappy.so.1.1.3

6.       Add following in $HBASE_HOME/conf/hbase-env.sh ( change dir as per ur installation) 

export HADOOP_CONF_DIR=/home/hadoop/hadoop-0.20.2-hdh3u3/conf

export HBASE_CLASSPATH=$HADOOP_CONF_DIR:/home/hadoop/hbase-hdh3u3/conf/hbase-site.xml

export HBASE_LIBRARY_PATH=$HBASE_LIBRARY_PATH:/home/hadoop/hadoop-0.20.2-hdh3u3/lib/native/Linux-amd64-64

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/home/hadoop/hadoop-0.20.2-hdh3u3/lib/native/Linux-amd64-64

export JAVA_LIBRARY_PATH=$JAVA_LIBRARY_PATH:/home/hadoop/hadoop-0.20.2-hdh3u3/lib/native/Linux-amd64-64

export LIBRARY_PATH=$LIBRARY_PATH:/home/hadoop/hadoop-0.20.2-hdh3u3/lib/native/Linux-amd64-64

Scp the libsnappy* to all your nodes in the cluster

7.       Restart   hbase and hadoop.

8.       In  hbase shell type following command :     create 'test', { NAME => 'column', COMPRESSION => 'SNAPPY' }

9.       If there is no error snappy is installed properly