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https://issues.apache.org/jira/browse/ARROW-7242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17634094#comment-17634094
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JAVIER ANDRES RECASENS SANCHEZ commented on ARROW-7242:
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Do we have an update on this? It would be very helpful if parquet had float16
support.
> [C++] Coerce Arrow half-precision float to float32
> --------------------------------------------------
>
> Key: ARROW-7242
> URL: https://issues.apache.org/jira/browse/ARROW-7242
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++, Python
> 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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