[SPARK-35689] Add logging for null value retrieval for SymmetricHashJoinStateManager

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.2.0
• Fix Version/s: 3.2.0, 3.1.3
• Component/s: Structured Streaming
• Assignee: L. C. Hsieh
• Reporter: L. C. Hsieh
• Created: 09/Jun/21 05:33
• Updated: 12/Jun/21 03:48
• Resolved: 12/Jun/21 01:19

Description

Once we get null from state store in SymmetricHashJoinStateManager, it is better to add meaningful logging for the case. It is better for debugging.

Issue Links

• links to: [Github] Pull Request #32828 (viirya)
• links to: [Github] Pull Request #32890 (viirya)
• links to: [Github] Pull Request #32890 (viirya)