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https://issues.apache.org/jira/browse/PARQUET-758?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17732886#comment-17732886
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ASF GitHub Bot commented on PARQUET-758:
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gszadovszky commented on PR #184:
URL: https://github.com/apache/parquet-format/pull/184#issuecomment-1592472334
I think that compatibility in Parquet file format is such a strong
requirement that extending primitive types is simply not an option. (I agree
though, if I would introduce a new file format I would specify only 3 primitive
types: FIXED_LEN, VAR_LEN, BIT. But we already have what we have.)
Meanwhile, I don't see why the Float16 physical type would be a requirement
to use BYTE_STREAM_SPLIT. I don't think it is widely used so we can update the
related spec to allow this encoding to be used for any primitive type (except
BOOLEAN). Then, it is up to the implementations to use it for
`FIXED_LEN_BYTE_ARRAY[2] (FLOAT16)`.
> [Format] HALF precision FLOAT Logical type
> ------------------------------------------
>
> Key: PARQUET-758
> URL: https://issues.apache.org/jira/browse/PARQUET-758
> Project: Parquet
> Issue Type: Improvement
> Components: parquet-format
> Reporter: Julien Le Dem
> Priority: Minor
>
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