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https://issues.apache.org/jira/browse/ARROW-1674?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16205261#comment-16205261
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ASF GitHub Bot commented on ARROW-1674:
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Github user jacques-n commented on the issue:
https://github.com/apache/arrow/pull/1201
I'm fine with it being more formal than a KeyValue but feel like it is a
property of int metadata, not bool. Systems that don't understand the property
can still deal with it that way.
> [Format] Add bit width metadata to Bool logical type
> ----------------------------------------------------
>
> Key: ARROW-1674
> URL: https://issues.apache.org/jira/browse/ARROW-1674
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Format
> Reporter: Wes McKinney
> Labels: pull-request-available
> Fix For: 0.8.0
>
>
> Some libraries represent boolean data as a single byte per value as a vector
> of int8/uint8 1's and 0's. It would be useful to be able to retain this
> metadata as an optional field on the {{Bool}} table in {{Schema.fbs}}
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