I have a requirement actually my data holds value like
Excessive Firewall Denies Between Hosts Detected more than 400 firewall deny attempts from a single source to a single destination within 5 minutes. This often indicates a service that was once used is now being blocked by a firewall.
Since 80% of my data holds this value so I want to replace it with lets say "abc" or "001" so that it consumes less disk space , now at the search level in kibana 001 or abc should be converted back to original string . Hope it makes sense .
Please suggest how I can achieve this