Deprecate the multi-patterns cudf::strings::replace_re API#22380
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Just a comment about the Python documentation
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TomAugspurger
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…22380) Deprecates the `cudf::strings::replace_re` function that accepts multiple regex patterns and replacements. This API does not follow the other regex API which all accept a `regex_program` parameter and has become difficult to maintain. This function pattern is not support by Pandas and there is no JNI wrapper for it either. After trying to create a libcudf benchmark for this API, it was found the function crashes if called with more than a few dozen rows even with only 2 patterns. The crash is due to a bug in the code which has never been reported (the bug was introduced 4 years ago according to git). Therefore, I have complete confidence that this API has never been used and can be removed in a future release. The gtests have also been removed to prevent deprecation warnings. This PR also includes a fix for the bug for completeness. Authors: - David Wendt (https://github.com/davidwendt) Approvers: - Matthew Roeschke (https://github.com/mroeschke) - Bradley Dice (https://github.com/bdice) - Lawrence Mitchell (https://github.com/wence-) - Yunsong Wang (https://github.com/PointKernel) URL: rapidsai#22380
shrshi
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May 12, 2026
…22380) Deprecates the `cudf::strings::replace_re` function that accepts multiple regex patterns and replacements. This API does not follow the other regex API which all accept a `regex_program` parameter and has become difficult to maintain. This function pattern is not support by Pandas and there is no JNI wrapper for it either. After trying to create a libcudf benchmark for this API, it was found the function crashes if called with more than a few dozen rows even with only 2 patterns. The crash is due to a bug in the code which has never been reported (the bug was introduced 4 years ago according to git). Therefore, I have complete confidence that this API has never been used and can be removed in a future release. The gtests have also been removed to prevent deprecation warnings. This PR also includes a fix for the bug for completeness. Authors: - David Wendt (https://github.com/davidwendt) Approvers: - Matthew Roeschke (https://github.com/mroeschke) - Bradley Dice (https://github.com/bdice) - Lawrence Mitchell (https://github.com/wence-) - Yunsong Wang (https://github.com/PointKernel) URL: rapidsai#22380
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Description
Deprecates the
cudf::strings::replace_refunction that accepts multiple regex patterns and replacements. This API does not follow the other regex API which all accept aregex_programparameter and has become difficult to maintain. This function pattern is not support by Pandas and there is no JNI wrapper for it either.After trying to create a libcudf benchmark for this API, it was found the function crashes if called with more than a few dozen rows even with only 2 patterns. The crash is due to a bug in the code which has never been reported (the bug was introduced 4 years ago according to git). Therefore, I have complete confidence that this API has never been used and can be removed in a future release.
The gtests have also been removed to prevent deprecation warnings.
This PR also includes a fix for the bug for completeness.
Checklist