[YARN-8985] Improve debug log in FSParentQueue when assigning container

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.3.0
• Fix Version/s: 3.3.0
• Component/s: fairscheduler
• Hadoop Flags: Reviewed
• Assignee: Wilfred Spiegelenburg
• Reporter: Wilfred Spiegelenburg
• Created: 08/Nov/18 05:07
• Updated: 26/Feb/20 05:29
• Resolved: 05/Dec/18 23:05

Description

Tracking assignments in the queue hierarchy is not possible at a DEBUG level because the FSParentQueue does not log a node being offered to the queue.
This means that if a parent queue has no leaf queues then it will be impossible to track the offering leaving a hole in the tracking.