I think you need to spend more time thinking through HBase-10070. You may end up creating more problems than you solve.
But more to the point, OP is asking for managing transactions across multiple databases. Not possible period. Its one thing for a system like Drill to perform a series of queries and then combining the result sets, but that not all within a single transaction. > On May 10, 2015, at 3:11 PM, Ted Yu <[email protected]> wrote: > > HBASE-10070
