Hello Team,

I've been trying to focus my latest work on making the logging of the
service more concise and more useful.  There's a lot of clutter in the logs
that makes troubleshooting difficult.  I've also submitted a few ideas for
other small improvements.

Can you please assist in reviewing and committing the following?

https://issues.apache.org/jira/browse/HIVE-20831
https://issues.apache.org/jira/browse/HIVE-18902
https://issues.apache.org/jira/browse/HIVE-20255
https://issues.apache.org/jira/browse/HIVE-20239
https://issues.apache.org/jira/browse/HIVE-20223
https://issues.apache.org/jira/browse/HIVE-20161
https://issues.apache.org/jira/browse/HIVE-20160
https://issues.apache.org/jira/browse/HIVE-20484
https://issues.apache.org/jira/browse/HIVE-19846
https://issues.apache.org/jira/browse/HIVE-19403

Thanks!