[HADOOP-10302] Allow CallQueue impls to be swapped at runtime (part 1: internals) Depends on: subtask1

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Not A Problem
• Assignee: Chris Li
• Reporter: Chris Li
• Created: 28/Jan/14 22:07
• Updated: 06/Nov/14 23:46
• Resolved: 15/Feb/14 03:58

Description

We wish to swap the active call queue during runtime in order to do performance tuning without restarting the namenode.

This patch adds only the internals necessary to swap. Part 2 will add a user interface so that it can be used.