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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/04/19 22:33:38 UTC
[GitHub] [arrow-rs] tustvold opened a new issue, #1590: Union Layout Should Not Support Validity Mask
tustvold opened a new issue, #1590:
URL: https://github.com/apache/arrow-rs/issues/1590
**Describe the bug**
> Unlike other data types, unions do not have their own validity bitmap. Instead, the nullness of each slot is determined exclusively by the child arrays which are composed to create the union.
From https://arrow.apache.org/docs/format/Columnar.html#union-layout
**To Reproduce**
We currently support this, which aside from adding a lot of complexity, is incorrect
**Expected behavior**
We shouldn't support something not in the arrow specification
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[GitHub] [arrow-rs] tustvold commented on issue #1590: Union Layout Should Not Support Separate Validity Mask
Posted by GitBox <gi...@apache.org>.
tustvold commented on issue #1590:
URL: https://github.com/apache/arrow-rs/issues/1590#issuecomment-1103234264
This does come with a rather strange implication, that nulls are typed which is a little odd...
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[GitHub] [arrow-rs] alamb closed issue #1590: Union Layout Should Not Support Separate Validity Mask
Posted by GitBox <gi...@apache.org>.
alamb closed issue #1590: Union Layout Should Not Support Separate Validity Mask
URL: https://github.com/apache/arrow-rs/issues/1590
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