Today Drill Query execution is optimistic and stateful (at least due to data exchanges) - if any of the stages of query execution fails whole query fails. If query is just simple scan, filter push down and project where no data exchange happens between DrillBits there is no need to fail whole query when one DrillBit fails, as minor fragments running on that DrillBit can be rerun on the other DrillBit. There are probably multiple ways to achieve this. This JIRA is to open discussion on:
1. agreement that we need to support above use case
2. means of achieving it.