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Issue: halffloat implementation in pyarrow parquet #2691

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KDra opened this issue Oct 3, 2018 · 6 comments
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Issue: halffloat implementation in pyarrow parquet #2691

KDra opened this issue Oct 3, 2018 · 6 comments

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@KDra
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KDra commented Oct 3, 2018

Hi,

I am currently using pyarrow to store pandas datasets. Due to the very large amount of data it would be useful to use a lower precision for floats. I saw that it is implemented in the parquet standard but not currently available in pyarrow, since I get the following error:

ArrowNotImplementedError: Unhandled type for Arrow to Parquet schema conversion: halffloat
@wesm
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wesm commented Oct 3, 2018

hi @KDra -- float16 is not part of the Parquet spec. We could coerce float16 to float32 on write, though. Please open a feature request

@wesm
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wesm commented Jan 27, 2019

https://issues.apache.org/jira/browse/PARQUET-1403

@wesm wesm closed this as completed Jan 27, 2019
@Santosh-Gupta
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Any update on this?

@wesm
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wesm commented May 27, 2019

See the JIRA link, it is still open/unresolved

@manifoldhiker
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It would be nice if parquet had float16 support.

@apache apache locked and limited conversation to collaborators May 7, 2020
@wesm
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wesm commented May 7, 2020

Please refer to the JIRA issue

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@wesm @KDra @Santosh-Gupta @manifoldhiker