[SPARK-32620] Reset the numPartitions metric when DPP is enabled

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0
• Fix Version/s: 3.0.1, 3.1.0
• Component/s: SQL
• Assignee: Yuming Wang
• Reporter: Yuming Wang
• Created: 15/Aug/20 00:20
• Updated: 09/Sep/20 02:07
• Resolved: 26/Aug/20 01:47

Description

This pr reset the numPartitions metric when DPP is enabled. Otherwise, it is always a static value.

Issue Links

• causes: SPARK-32788 non-partitioned table scan should not have partition filter
• links to: [Github] Pull Request #29436 (wangyum)