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https://issues.apache.org/jira/browse/ARROW-1096?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17658128#comment-17658128
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Rok Mihevc commented on ARROW-1096:
-----------------------------------
This issue has been migrated to [issue
#16683|https://github.com/apache/arrow/issues/16683] on GitHub. Please see the
[migration documentation|https://github.com/apache/arrow/issues/14542] for
further details.
> [C++] Memory mapping file over 4GB fails on Windows
> ---------------------------------------------------
>
> Key: ARROW-1096
> URL: https://issues.apache.org/jira/browse/ARROW-1096
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++, Python
> Affects Versions: 0.4.0
> Reporter: Wes McKinney
> Assignee: Max Risuhin
> Priority: Major
> Fix For: 0.5.0
>
>
> This succeeds on a 3.4 GB file, but fails on a 6GB file. I suspect the
> failure point is exactly 4GB but will investigate
> {code}
> In [9]: mm = pyarrow.memory_map('df_big.feather')
> ---------------------------------------------------------------------------
> ArrowIOError Traceback (most recent call last)
> <ipython-input-9-3160805e299d> in <module>()
> ----> 1 mm = pyarrow.memory_map('df_big.feather')
> pyarrow\io.pxi in pyarrow.lib.memory_map
> (C:\bld\pyarrow_1495576136174\work\arrow-a8f8ba0cbcf5f596f042e90b7a208e7a0c3925b7\python\build\temp.win-amd64-3.6\Release\lib.cxx:39905)()
> pyarrow\io.pxi in pyarrow.lib.MemoryMappedFile.open
> (C:\bld\pyarrow_1495576136174\work\arrow-a8f8ba0cbcf5f596f042e90b7a208e7a0c3925b7\python\build\temp.win-amd64-3.6\Release\lib.cxx:39709)()
> pyarrow\error.pxi in pyarrow.lib.check_status
> (C:\bld\pyarrow_1495576136174\work\arrow-a8f8ba0cbcf5f596f042e90b7a208e7a0c3925b7\python\build\temp.win-amd64-3.6\Release\lib.cxx:6932)()
> ArrowIOError: IOError: Memory mapping file failed, errno: 5
> {code}
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