feat(datafusion-spark): implement spark compatible unhex function#19909
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alamb merged 9 commits intoapache:mainfrom Jan 22, 2026
Merged
feat(datafusion-spark): implement spark compatible unhex function#19909alamb merged 9 commits intoapache:mainfrom
unhex function#19909alamb merged 9 commits intoapache:mainfrom
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Jefffrey
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Jan 21, 2026
| I: Iterator<Item = Option<T>>, | ||
| T: AsRef<str>, | ||
| { | ||
| let mut builder = BinaryBuilder::with_capacity(len, len * 32); |
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It was chosen based on benchmark results and seemed like a reasonable initial estimate. Thanks for pointing this out, for StringArray and LargeStringArray we can use a more accurate capacity from values().len(). I’ve updated the code accordingly.
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Thanks for the review and for pointing this out. I’ve updated the implementation accordingly, and the tests have been updated as well and added to the STLs. |
Jefffrey
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Jan 21, 2026
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de-bgunter
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Mar 24, 2026
…pache#19909) ## 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 apache#123` indicates that this PR will close issue apache#123. --> Part of: apache#15914 ## Rationale for this change <!-- 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. --> Implement spark compatible unhex functions: https://spark.apache.org/docs/latest/api/sql/index.html#unhex ## 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? Yes. UTs and SLT added. <!-- 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? No. <!-- 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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Which issue does this PR close?
Part of: #15914
Rationale for this change
Implement spark compatible unhex functions:
https://spark.apache.org/docs/latest/api/sql/index.html#unhex
What changes are included in this PR?
Are these changes tested?
Yes. UTs and SLT added.
Are there any user-facing changes?
No.