How to limit CSV file size

All Apps and Add-ons

Currently, I'm pulling in the minemeld_domainthreatlist.csv lookup via the Palo Alto Splunk TA v 6.1.1.
It's working as expected, but the CSV file gets rather large (currently over 300mb) with lots of duplicate events.

Is there a way of controlling the file size? Either by time or number of similar events?

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