Installing the JNA on Debian or Ubuntu Systems
Installing JNA can improve Cassandra memory usage.
Procedure
Install the JNA with the following command:
$ sudo apt-get install libjna-java
For Ubuntu 10.04 LTS, update to JNA 3.4 as follows:
- Download the jna.jar from https://github.com/twall/jna.
- Remove older versions of the JNA from the /usr/share/java/ directory.
- Place the new jna.jar file in /usr/share/java/ directory.
- Create a symbolic link to the file:
ln -s /usr/share/java/jna.jar <install_location>/lib