return rollup info in a more user-friendly way
return rollup info in a more user-friendly way

in particular, show the actual schema used

replay/metrictank,raintank/raintank-metric,raintank/metrictank,raintank/metrictank,raintank/raintank-metric,replay/metrictank,replay/metrictank,raintank/metrictank,raintank/raintank-metric,raintank/metrictank,replay/metrictank