[collectd] custom RRARows for each RRA file when creating RRD files?

[Zhou, Yuantai]

Hi all,
Is there a way to configure a different RRARow for each RRA in the RRD filles? 

I would like to have different number of rows for RRAs with different timespans. We are going to have a fairly large implementation so we want to fine turn the configurations.

Thanks.
Yuantai