[HAWQ-1798] QD memory leaks

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0.0
• Component/s: Dispatcher, Query Execution
• Assignee: Ruilong Huo
• Reporter: Ruilong Huo
• Created: 26/Jul/21 06:05
• Updated: 11/Aug/21 01:32
• Resolved: 11/Aug/21 01:32

Description

```
Describe the bug
QD has memory leak in dispatcher, scheduler and new executor wrapper

To reproduce
use instrument to check QD process, then run normal create, insert, select sql statements

Expected behaviour
Only caql memory leak found is expected.
```