[HUDI-1701] Implement HoodieTableSource.explainSource for all kinds of pushing down

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Done
• Fix Version/s: 0.8.0
• Component/s: flink
• Labels: pull-request-available
• Assignee: Danny Chen
• Reporter: Danny Chen
• Created: 17/Mar/21 08:30
• Updated: 17/Mar/21 15:05
• Resolved: 17/Mar/21 15:05

Description

We should implement the interface HoodieTableSource.explainSource to track the table source signature diff for all kinds of pushing down, such as filter pushing or limit pushing.

Issue Links

• links to: GitHub Pull Request #2690