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From Joris Van den Bossche <>
Subject Re: LZ4 support in Windows conda (py)arrow
Date Fri, 11 Jun 2021 09:07:50 GMT
The conda packages from the default channel are indeed managed by
Anaconda (Continuum Analytics is their old name). For arrow-cpp, the
reciple is here:

And indeed, looking at the windows build script, LZ4 is not enabled:

You can open an issue there to try to reach out to them.


On Fri, 11 Jun 2021 at 10:38, Joris Peeters <> wrote:
> In the matrix of pyarrow artifacts for [conda, conda-forge] x [linux, windows], it seems
all of them support LZ4, except (conda, windows). Is there a known reason for this?
> As I understand it, the conda Arrow builds are managed externally (by Continuum?), so
perhaps should get in touch with them - as might not have `-DARROW_WITH_LZ4=ON`?
> There errors at run-time look like,
> ...
>     pa.CompressedInputStream(
>   File "pyarrow\io.pxi", line 1208, in pyarrow.lib.CompressedInputStream.__init__
>   File "pyarrow\io.pxi", line 1579, in pyarrow.lib.Codec.__init__
>   File "pyarrow\error.pxi", line 141, in pyarrow.lib.pyarrow_internal_check_status
>   File "pyarrow\error.pxi", line 118, in pyarrow.lib.check_status
> pyarrow.lib.ArrowNotImplementedError: Support for codec 'lz4' not built
> Cheers,
> -Joris.

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