Github user vvysotskyi commented on the issue:
https://github.com/apache/drill/pull/1066
@chunhui-shi, this branch is not ready completely. There is opened a pull
request on Apache Calcite
[CALCITE-2018](https://issues.apache.org/jira/browse/CALCITE-2018) which should
be cherry-picked into this branch. When it is merged into Apache master, we
will update both branches and create a pull request on mapr/incubator-calcite.---
