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https://issues.apache.org/jira/browse/ARROW-273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15438142#comment-15438142
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Jacques Nadeau commented on ARROW-273:
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Misleading class names/implementations. The java code uses signed ints
everywhere (except the char vector, where java supports an unsigned 2 byte
value). The Uint vectors are incomplete. Given the issues with Java and using
unsigned values, I think we should stick with signed.
> Lists use unsigned offset vectors instead of signed (as defined in the spec)
> ----------------------------------------------------------------------------
>
> Key: ARROW-273
> URL: https://issues.apache.org/jira/browse/ARROW-273
> Project: Apache Arrow
> Issue Type: Bug
> Components: Java - Vectors
> Reporter: Julien Le Dem
>
> The List vector defines it's offset vector as UInt4Vector. (unsigned int 34)
> According to the arrow spec it should be a signed int32.
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