[SPARK-16002] Sleep when no new data arrives to avoid 100% CPU usage

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Component/s: Structured Streaming
• Target Version/s: 2.0.0
• Assignee: Shixiong Zhu
• Reporter: Shixiong Zhu
• Created: 16/Jun/16 22:04
• Updated: 01/Nov/16 22:15
• Resolved: 21/Jun/16 19:43

Description

Right now if the trigger is ProcessTrigger(0), StreamExecution will keep polling new data even if there is no data. Then the CPU usage will be 100%. We should add a minimum polling delay when no new data arrives.

Issue Links

• links to: [Github] Pull Request #13718 (zsxwing)
• links to: [Github] Pull Request #15497 (lw-lin)