Multiple scans for mapreduce over snapshots

[Andrew Mains]

Hi all,

We're looking into using TableSnapshotInputFormat on a salted table, and 
we need to push down conditions on the rest of the rowkey to each bucket 
(using hive with my patch for 
https://issues.apache.org/jira/browse/HIVE-7805). MultiTableInputFormat 
allows us to do this on HBase proper, but it seems like this isn't yet 
supported on snapshots. There's nothing in either google or JIRA 
discussing such a feature afaict, so I thought I'd ask here:

Would it be reasonable for HBase to support an equivalent of 
`MultiTableInputFormat` over snapshots? Is there a better alternative 
that we should be using instead?

Thanks!

Andrew