https://issues.apache.org/jira/issues/?jql=assignee%20%3D%20yhuai
Yin, has done an amazing job with new features to hive's planner and optimizer. He has started reviewing issues of others. Additionally he is finding edge-case bugs in current features. His multi-year effort on https://issues.apache.org/jira/browse/HIVE-2206 is an impressive body of work and example of great determination.
