Question

Adaptive inputs snapshot cleanup

Hi All,

As part of Delayed Learning, we are storing Adaptive inputs for 30 days in Make Decision Data Flow. These data is occupying space in GB's I am aware that these data are getting removed after specified time but not sure which background Process or Agent is removing. Does anybody have an idea which background process is removing these Adaptive data from server?

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Pega
December 28, 2016 - 12:58am

I think this is managed by Cassandra as it handles removal of expired data.

December 28, 2016 - 3:27am

Hi, "shanr2" is correct. The time you specify is mapped to a time to live property of the pxDecisionData data stored in Cassandra. After the TTL expires, this data won't be included in the results but might still be physically present, still occupying space. After a certain amount of time (please check Cassandra docs for TTL policies) this data will be removed during Cassandra compactation and repair processes.

-Otto

December 28, 2016 - 12:32pm
Response to Otto_Perdeck

Thank you very much Otto. Can you please help me in finding Cassandra doc which you have mentioned?