Github user dongjoon-hyun commented on the issue:
https://github.com/apache/spark/pull/22197
@yucai . If you don't mind, could you update the PR description? This PR
doesn't generate new filters here. This only changes `field resolution` logic.
With and without this PR, there exists filters and there occurs filter
push-downs.
```
- No filter will be pushdown.
+ Wrong filters will be pushed down.
```
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