dtenedor opened a new pull request, #56478:
URL: https://github.com/apache/spark/pull/56478
## What changes were proposed in this pull request?
This PR refactors the relation-identifier suffix-match logic
(`matchedIdentifier`) out of the
`ResolveHints.ResolveJoinStrategyHints` rule and into a static,
resolver-parameterized helper,
so the logic can be shared without depending on fixed-point rule state.
- Added a static `ResolveHints.matchedIdentifier(identInHint, identInQuery,
resolver)` helper that
takes the `resolver: Resolver` (i.e. `(String, String) => Boolean`) as an
explicit parameter.
- Moved the explanatory doc comment (describing the tail-match semantics and
the catalog-independent
comparison) onto the static helper.
- `ResolveJoinStrategyHints` now keeps a thin private `matchedIdentifier`
that delegates to the
static helper, passing its `resolver`.
Passing the `resolver` in explicitly gives both the fixed-point analyzer and
the single-pass
resolver one source of truth for hint-to-relation matching, without either
having to depend on the
other's rule state.
No behavior change: the helper body is identical to the original.
## How was this patch tested?
Existing join-hint resolution test coverage (e.g. join hint suites) pins the
behavior; this is a
pure extraction with no functional change.
## Was this patch authored or co-authored using generative AI tooling?
No
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