[SPARK-33155] Make spark.kubernetes.pyspark.pythonVersion allow `Python 3` only

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.1.0
• Fix Version/s: 3.1.0
• Component/s: Kubernetes
• Assignee: Dongjoon Hyun
• Reporter: Dongjoon Hyun
• Created: 15/Oct/20 05:14
• Updated: 15/Oct/20 08:51
• Resolved: 15/Oct/20 08:51

Issue Links

• relates to: SPARK-32138 Drop Python 2, 3.4 and 3.5 in codes and documentation
• links to: [Github] Pull Request #30049 (dongjoon-hyun)