[FLINK-35528] Skip execution of interruptible mails when yielding

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.20.0
• Fix Version/s: 1.20.0
• Component/s: Runtime / Checkpointing, Runtime / Task
• Labels: pull-request-available
• Assignee: Piotr Nowojski
• Reporter: Piotr Nowojski
• Created: 05/Jun/24 13:01
• Updated: 12/Jun/24 12:20
• Resolved: 12/Jun/24 12:20

Description

When operators are yielding, for example waiting for async state access to complete before a checkpoint, it would be beneficial to not execute interruptible mails. Otherwise continuation mail for firing timers would be continuously re-enqeueed. To achieve that MailboxExecutor must be aware which mails are interruptible.

The easiest way to achieve this is to set MIN_PRIORITY for interruptible mails.

Issue Links

• links to: GitHub Pull Request #24904