[HADOOP-12922] Separate Scheduler from FCQ

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Component/s: ipc
• Assignee: Xiaoyu Yao
• Reporter: Xiaoyu Yao
• Created: 14/Mar/16 18:41
• Updated: 24/Mar/16 20:57
• Resolved: 24/Mar/16 20:57

Description

Currently, CallQueueManager has a reference to FCQ which owns scheduler, call queue and multiplexer. It will make it easier to develop new call queues if scheduler and multiplexer can be made pluggable for reuse.

This ticket is opened to define a separate scheduler interface so that
1) different schedulers can be plugged in while using FCQ.
2) scheduler related metrics can be easily added for monitoring and trouble shooting.