[HDDS-5252] Pipeline placement policy filter datanodes that have not enough space for a single container

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.2.0
• Component/s: Ozone Datanode
• Labels: pull-request-available
• Assignee: Mark Gui
• Reporter: Mark Gui
• Created: 20/May/21 02:32
• Updated: 11/Jun/21 12:52
• Resolved: 26/May/21 06:56

Description

Pipeline placement policy should filter out those datanodes that do not even have enough space for a single container, otherwise even if the pipeline creation succeeds, a datanode may quickly report that it fails to create a container and there will be successive failures because we will choose that node again and again.

Issue Links

• causes: HDDS-5336 Fix datanode capacity related race condition
• links to: GitHub Pull Request #2271