[FLINK-3586] Risk of data overflow while use sum/count to calculate AVG value

• Type: Sub-task
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.1.0
• Component/s: Table SQL / Legacy Planner
• Assignee: Fabian Hueske
• Reporter: Chengxiang Li
• Created: 08/Mar/16 06:43
• Updated: 22/Mar/19 09:56
• Resolved: 25/May/16 14:17

Description

Now, we use (sum: Long, count: Long to store AVG partial aggregate data, which may have data overflow risk, we should use unbounded data type(such as BigInteger) to store them for necessary data types.

Issue Links

• links to: GitHub Pull Request #2024