[SPARK-27186] Optimize SortShuffleWriter writing process

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: 3.0.0
• Component/s: Shuffle, Spark Core
• Assignee: Unassigned
• Reporter: wangjiaochun
• Created: 18/Mar/19 09:17
• Updated: 12/Dec/22 18:10
• Resolved: 21/Mar/19 08:01

Description

If the SortShuffleWriter.write method records is empty, it should be return directly and no need to keep running，refer to the process of BypassMergeSortShuffleWriter.write. Here are the benefits of create Instance ExternalSorter and tmp file. 

Issue Links

• links to: GitHub Pull Request #24127