The snapshot feature we have in Cloudera, i would like to know if it take a full backup or incremental backup.

Because if it is taking a full backup everytime then there is a drawback to it as for an example i make changes and add a 2MB data to my 1000GB file then it will again take a backup of entire 1000GB file and not just a 2MB changes i made.

Would request someone to answer on above query.