kumarUjjawal opened a new pull request, #23402:
URL: https://github.com/apache/datafusion/pull/23402
## Which issue does this PR close?
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- Closes #23341.
## Rationale for this change
The list files cache currently performs a full table listing on a cold cache
miss, even when partition pruning has already narrowed the scan to a specific
path prefix.
This makes selective partition queries pay the cost of listing the full
table unless users disable the cache.
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## What changes are included in this PR?
- List only the requested prefix on cold list-cache misses.
- Keep using full-table cache entries to serve later prefix queries.
- Ensure prefix-scoped cache entries do not satisfy full-table lookups.
- Invalidate matching prefix-scoped list-cache entries on table writes.
- Add regression tests that check the actual object store list prefix.
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## Are these changes tested?
Yes
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## Are there any user-facing changes?
Partition-pruned listing table queries with the list files cache enabled
avoid full table listings on cold cache misses.
No API Change
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