Re: postgres_fdw: using TABLESAMPLE to collect remote sample

[James Finnerty]

This patch looks good to me.  I have two very minor nits: The inflation of the 
sample size by 10% is arbitrary but it doesn't seem unreasonable or concerning. 
 It just makes me curious if there are any known cases that motivated adding 
this logic.  Secondly, if the earliest non-deprecated version of PostgreSQL 
supports sampling, then you could optionally remove the logic that tests for 
that. The affected lines should be unreachable.