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[SPARK-58972][FOLLOWUP][DOCS] Add migration guide entry for from_protobuf wrapper unwrapping - #59245
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…obuf wrapper unwrapping SPARK-58972 changed what from_protobuf returns for a present-but-empty primitive wrapper under unwrap.primitive.wrapper.types (NULL -> the scalar default). Document the behavior change in the 4.3 -> 4.4 migration guide. Co-authored-by: Isaac <no-reply@databricks.com>
kavpreetgrewal
approved these changes
Oct 6, 2026
uros-b
approved these changes
Oct 6, 2026
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Thank you @bhollis-dbx for following up on this! |
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Also, thank you @kavpreetgrewal for review |
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cc @zhengruifeng, re: #58253 |
dongjoon-hyun
requested changes
Oct 7, 2026
Co-authored-by: Dongjoon Hyun <dongjoon@apache.org>
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@dongjoon-hyun good call, accepted your suggestion. |
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What changes were proposed in this pull request?
SPARK-58972 changed what from_protobuf returns for a present-but-empty primitive wrapper under unwrap.primitive.wrapper.types (NULL -> the scalar default). Document the behavior change in the 4.3 -> 4.4 migration guide.
Why are the changes needed?
Users should know that the behavior is changing.
Does this PR introduce any user-facing change?
No.
How was this patch tested?
Documentation only.
Was this patch authored or co-authored using generative AI tooling?
Generated-by: Claude Opus 5.5