Hi to all,
as stated by at the documentation[1] "for optimal performance, number of salt buckets should match number of region servers". 
So, why not to add an option AUTO/DEFAULT for salting that defaults this parameter to the number of region servers? 
Otherwise I have to manually connect to HBase, retrieve that number and pass to Phoenix...
What do you think?

[1] https://phoenix.apache.org/performance.html#Salting