Github user kkhatua commented on the issue:
https://github.com/apache/drill/pull/1086
Ok. Looks like
[DRILL-5926](https://issues.apache.org/jira/browse/DRILL-5926) (committed into
Apache master) explicitly has a need for bumping up the memory to 4GB for heap
alone. I guess we'll need to figure out something else to manage this.---
