[KAFKA-2655] Consumer.poll(0)'s overhead too large

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Not A Problem
• Component/s: consumer
• Assignee: Jason Gustafson
• Reporter: Guozhang Wang
• Created: 14/Oct/15 21:15
• Updated: 18/Feb/16 09:15
• Resolved: 07/Jan/16 23:49

Description

Currently with a single partition, even if it is paused, calling poll(0) could still be costing as much as 1ms since it triggers a few system calls. Some of those can possibly be optimized away.