[FLINK-12480] Introduce mailbox to StreamTask main-loop

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Implemented
• Component/s: Runtime / Task
• Labels: pull-request-available
• Assignee: Stefan Richter
• Reporter: Stefan Richter
• Created: 10/May/19 09:44
• Updated: 23/May/19 07:45
• Resolved: 23/May/19 07:45

Description

In this sub-task, we introduce the mailbox data-structure to the StreamTask's main-loop that runs the step-wise actions. After this sub-task, the mailbox events should already be respected, but the loop will currently still always find that the mailbox is empty because it is not yet integrated with the events that we will include in the next sub-tasks.

Issue Links

• links to: GitHub Pull Request #8431