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https://issues.apache.org/jira/browse/PARQUET-1403?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16590290#comment-16590290
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Wes McKinney commented on PARQUET-1403:
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Agreed, updated the issue title
> [C++] Coerce Arrow half-precision float to float32
> --------------------------------------------------
>
> Key: PARQUET-1403
> URL: https://issues.apache.org/jira/browse/PARQUET-1403
> Project: Parquet
> Issue Type: Bug
> Components: parquet-cpp
> Affects Versions: cpp-1.4.0
> Reporter: Naor Volkovich
> Priority: Major
>
> When trying to save a Pandas DF using "to_parquet" when that DF has a column
> with a dtype of float16, I get the error:
> "pyarrow.lib.ArrowNotImplementedError: Unhandled type for Arrow to Parquet
> schema conversion: halffloat"
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