How to find out how much disk space does a Set take up in Aerospike?

Question

The closest that I found is using the info command of the asmonitor tool but it only goes as granular as the disk usage of the Namespace. Possibly using the Aerospike Java client would be cool, too.

Answer 1

You can get the number of records in a set using asinfo:

asinfo -v sets -l

You would then need to know the avg record size in your set.

Otherwise, you would have to write a UDF and do a scan aggregation (but as far as I understand, this would still be a rough approximation as there is no easy way to know exactly how much is used internally through a UDF reading the bins of a record).