Region server should be installed on server which is a data node. Region server count may be lower than data node count. So some data nodes would not have region server running.
See http://hbase.apache.org/book.html#regions.arch.locality Cheers On Fri, Sep 26, 2014 at 7:02 AM, Thomas Kwan <[email protected]> wrote: > Hi there, > > To get good read performance, should the region server be installed on > every data node? (Thinking about data locality here) > > thanks > thomas >
