[FLINK-7971] Fix potential NPE with inconsistent state

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.3.4, 1.4.0, 1.5.0
• Component/s: Table SQL / API
• Assignee: Ruidong Li
• Reporter: Ruidong Li
• Created: 03/Nov/17 06:02
• Updated: 12/Mar/18 15:43
• Resolved: 12/Mar/18 15:43

Description

In GroupAggProcessFunction， the status of state and cntState are not consistent, which may cause NPE when state is not null but cntState is null.

Issue Links

• links to: GitHub Pull Request #4941