fix(arrow/array): optional struct array with required field #359
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lidavidm
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Apr 22, 2025
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lidavidm
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I feel like Arrow should either sit down and specify the semantics of a nullable field, or else it should explicitly declare that validation is up to the application
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Rationale for this change
apache/iceberg-go#398 discovered that the current
NewStructArrayWithFieldsfails if any child is marked as non-nullable but has nulls (as would be the case in an optional struct array full of nulls with a required field). So we need to allow constructing such an array.What changes are included in this PR?
A new function is created,
NewStructArrayWithFieldsAndNullswhich takes in the top level struct null bitmap, the number of nulls, offset columns and list of fields.Are these changes tested?
Yes, a unit test was created for it.
Are there any user-facing changes?
The above case that would error, now will no longer error.