Review request for HIVE-22601 and HIVE-24606

[おくみん <ma...@okumin.com>]

Hi Hive developers,

Could anyone please review the two issues below or
assign familiarized persons?
I have opened two issues and created patches. They would fix lines
that have no recent changes and I have no idea who should review them.
So I would like someone familiar to take a look when they have a chance.

1. HIVE-22601
This issue can eliminate columns from a result when multiple aliases and
UNION are combined.
I have observed this one when I used Hivemall which provides many useful ML
features.
The following PR would prevent ParseUtils from rewriting an AST in the
wrong manner.
https://github.com/apache/hive/pull/2042

2. HIVE-24606
This issue can silently drop rows generated by previous and dependent tasks.
I faced this issue when CTE materialization is enabled. The next major
version will probably enable it by default.
The following PR would let SemanticAnalyzer link correct dependencies
between tasks.
https://github.com/apache/hive/pull/1873

Please feel free to ask me on JIRA or GitHub if you have questions.

Thanks,
Okumin