[branch-53] chore: Optimize schema rewriter usages (#21158)#21183
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mbutrovich merged 1 commit intoapache:branch-53from Mar 26, 2026
Merged
[branch-53] chore: Optimize schema rewriter usages (#21158)#21183mbutrovich merged 1 commit intoapache:branch-53from
mbutrovich merged 1 commit intoapache:branch-53from
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## Which issue does this PR close? <!-- We generally require a GitHub issue to be filed for all bug fixes and enhancements and this helps us generate change logs for our releases. You can link an issue to this PR using the GitHub syntax. For example `Closes #123` indicates that this PR will close issue #123. --> - Closes #. ## Rationale for this change The rewriter actually has 3 responsibilities: 1. Index remapping — column indices in expressions may not match the file schema 2. Type casting — when logical and physical field types differ 3. Missing column handling — replacing references to absent columns with nulls Do not use cycles for schema rewrite if predicate is not set or logic schema equal to physical schema <!-- Why are you proposing this change? If this is already explained clearly in the issue then this section is not needed. Explaining clearly why changes are proposed helps reviewers understand your changes and offer better suggestions for fixes. --> ## What changes are included in this PR? <!-- There is no need to duplicate the description in the issue here but it is sometimes worth providing a summary of the individual changes in this PR. --> ## Are these changes tested? <!-- We typically require tests for all PRs in order to: 1. Prevent the code from being accidentally broken by subsequent changes 2. Serve as another way to document the expected behavior of the code If tests are not included in your PR, please explain why (for example, are they covered by existing tests)? --> ## Are there any user-facing changes? <!-- If there are user-facing changes then we may require documentation to be updated before approving the PR. --> <!-- If there are any breaking changes to public APIs, please add the `api change` label. -->
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This is a performance regression? Just want to confirm the backport criteria for this one.
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Also will we apply to main? |
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The main PR is merged #21158 |
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Which issue does this PR close?
Rationale for this change
The rewriter actually has 3 responsibilities:
Do not use cycles for schema rewrite if predicate is not set or logic schema equal to physical schema
What changes are included in this PR?
Are these changes tested?
Are there any user-facing changes?
Which issue does this PR close?
Rationale for this change
What changes are included in this PR?
Are these changes tested?
Are there any user-facing changes?