[SPARK-17314] Use Netty's DefaultThreadFactory to enable its fast ThreadLocal impl

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.1.0
• Component/s: Spark Core
• Assignee: Shixiong Zhu
• Reporter: Shixiong Zhu
• Created: 30/Aug/16 17:48
• Updated: 30/Aug/16 20:22
• Resolved: 30/Aug/16 20:22

Description

Netty will use its fast ThreadLocal implementation when a thread is a FastThreadLocalThread. This patch just switches to Netty's DefaultThreadFactory to trigger it.

Issue Links

• links to: [Github] Pull Request #14879 (zsxwing)