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https://issues.apache.org/jira/browse/ARROW-4578?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rok Mihevc updated ARROW-4578:
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External issue URL: https://github.com/apache/arrow/issues/15976
> [JS] Float16Vector toArray should be zero-copy
> ----------------------------------------------
>
> Key: ARROW-4578
> URL: https://issues.apache.org/jira/browse/ARROW-4578
> Project: Apache Arrow
> Issue Type: Bug
> Components: JavaScript
> Affects Versions: JS-0.4.0
> Reporter: Paul Taylor
> Assignee: Paul Taylor
> Priority: Major
> Labels: pull-request-available
> Fix For: JS-0.4.1
>
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> The {{Float16Vector#toArray()}} implementation currently transforms each half
> float into a single float, and returns a Float32Array. All the other
> {{toArray()}} implementations are zero-copy, and this deviation would break
> anyone expecting to give two-byte half floats to native APIs like WebGL. We
> should instead include {{Float16Vector#toFloat32Array()}} and
> {{Float16Vector#toFloat64Array()}} convenience methods that do rely on
> copying.
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