[HDDS-5831] Remove empty TaskQueue in ContainerStateMachine

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.2.0
• Component/s: Ozone Datanode
• Labels: pull-request-available
• Assignee: Tsz-wo Sze
• Reporter: Tsz-wo Sze
• Created: 06/Oct/21 10:13
• Updated: 24/Mar/23 02:06
• Resolved: 19/Oct/21 10:10

Description

In ContainerStateMachine, remove the container TaskQueue if the queue is empty.

This is a followup of HDDS-5355 and RATIS-1388.

Issue Links

• depends upon: RATIS-1414 In TaskQueue, a task future should be completed only after the task is polled.
• is duplicated by: HDDS-5429 Cleanup empty queues in ContainerStateMachine.containerTaskQueues.
• relates to: HDDS-5355 In ContainerStateMachine, share the executor threads between the containers
• relates to: RATIS-1388 Add an isEmpty method to TaskQueue
• links to: GitHub Pull Request #2716