[SPARK-22727] spark.executor.instances's default value should be 2

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Not A Problem
• Affects Version/s: 2.2.0
• Component/s: Spark Core, YARN
• Assignee: Unassigned
• Reporter: liuzhaokun
• Created: 07/Dec/17 09:09
• Updated: 17/May/20 18:13
• Resolved: 11/Dec/17 12:31

Description

spark.executor.instances's default value in running-on-yarn.md is 2,but in ExecutorAllocationManager.scala and org.apache.spark.util.Utils.scala it is used as the default value is 0.And I think it should be 2 for applications' initialization.

Issue Links

• links to: [Github] Pull Request #19919 (liu-zhaokun)