[FLINK-14119] Clean idle state for RetractableTopNFunction

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.9.0
• Fix Version/s: 1.9.1, 1.10.0
• Component/s: Table SQL / Planner
• Labels: pull-request-available
• Assignee: Alec
• Reporter: Jark Wu
• Created: 18/Sep/19 13:23
• Updated: 24/Sep/19 08:32
• Resolved: 24/Sep/19 08:31

Description

We cleaned the idle state for AppendOnlyTopNFunction and UpdatableTopNFunction, but missed this thing for RetractableTopNFunction. We should add it to avoid unlimited state size.

Issue Links

• links to: GitHub Pull Request #9741