title: how to control the number of mappers per region server for reading a HBase table
body: <p>I have a HBase Table(Written through Apache Phoenix) , That needs to be read and write to a Flat Text File. Current Bottleneck is as we have 32 salt buckets for that HBase(Phoenix) table it opens only 32 mappers to read. And when the data grows over 100 Billion it becomes time consuming. Can someone point me how to control the number of mappers per region server for reading a HBase table?  I also have seen program that explains  in below URL , "<a href="https://gist.github.com/bbeaudreault/9788499" rel="nofollow">https://gist.github.com/bbeaudreault/9788499</a>"  but I does not have a driver program that explains fully. Can someone help?</p>