[SPARK-23424] Add codegenStageId in comment

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.4.0
• Fix Version/s: 2.4.0
• Component/s: SQL
• Assignee: Kazuaki Ishizaki
• Reporter: Kazuaki Ishizaki
• Created: 14/Feb/18 17:55
• Updated: 21/Feb/18 03:27
• Resolved: 21/Feb/18 03:27

Description

SPARK-23032 introduced to use a per-query ID to the generated class name in {{WholeStageCodegenExec.}}This Jira also add the ID in the comment of the generated Java source file.
This is helpful for debugging when spark.sql.codegen.useIdInClassName is false.

Issue Links

• links to: [Github] Pull Request #20612 (kiszk)