[HADOOP-15253] Should update maxQueueSize when refresh call queue

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.8.2
• Fix Version/s: 2.10.0, 2.9.1, 2.8.4, 3.2.0, 3.1.1, 3.0.3
• Target Version/s: 2.7.8
• Assignee: Tao Jie
• Reporter: Tao Jie
• Created: 23/Feb/18 02:29
• Updated: 22/Jun/19 02:09
• Resolved: 22/Jun/19 02:09

Description

When calling dfsadmin -refreshCallQueue to update CallQueue instance, maxQueueSize should also be updated.
In case of changing CallQueue instance to FairCallQueue, the length of each queue in FairCallQueue would be 1/priorityLevels of original length of DefaultCallQueue. So it would be helpful for us to set the length of callqueue to a proper value.