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https://issues.apache.org/jira/browse/ARROW-1097?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wes McKinney resolved ARROW-1097.
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Resolution: Fixed
Assignee: Philipp Moritz
Fix Version/s: 0.5.0
This was fixed in
https://github.com/apache/arrow/commit/bfe15dbf91dce9a1dd810951db522de50e376c9f
> Reading tensor needs file to be opened in writeable mode
> --------------------------------------------------------
>
> Key: ARROW-1097
> URL: https://issues.apache.org/jira/browse/ARROW-1097
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Reporter: Vaishal Shah
> Assignee: Philipp Moritz
> Fix For: 0.5.0
>
>
> Tensors written in OSFile, while reading needs to file to be opened in
> writeable mode. read_tensor() is not working with any mode of file using
> OSFile. It works only with mem_mapped files(that too in 'r+w' mode)
> "IOError: only valid on writeable files"
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