UTF-8 in Drill

[James Turton]

Hi folks!

May I bring DRILL-8301 to our attention? Presently Drill is not always 
explicit about the en/decoding of its characters. The mentioned Jira and 
its associated PR explicitly program in an assumption of UTF-8 in places 
where Drill currently selects whatever the JVM has been configured to 
default to (typically UTF-8).

I'm in favour of this standardisation and the simplicity it brings, 
given the extent to which "the world chose UTF-8". It would still be 
possible, after standardising on UTF-8, for storage plugins to support 
different character encodings if they wanted to.

If you have any concerns or comments please visit the Jira 
<https://issues.apache.org/jira/browse/DRILL-8301> or the PR 
<https://github.com/apache/drill/pull/2637> over the next week and share 
them there.

Regards
James