[jira] [Updated] (ARROW-6531) [Python] Add detach() method to buffered streams

["Antoine Pitrou (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-6531?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antoine Pitrou updated ARROW-6531:
----------------------------------
    Summary: [Python] Add detach() method to buffered streams  (was: [C++] Do not always close raw OutputStream in BufferedOutputStream::Close)

> [Python] Add detach() method to buffered streams
> ------------------------------------------------
>
>                 Key: ARROW-6531
>                 URL: https://issues.apache.org/jira/browse/ARROW-6531
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Wes McKinney
>            Assignee: Antoine Pitrou
>            Priority: Major
>             Fix For: 0.15.0
>
>
> {{BufferedOutputStream::Close}} closes the raw file handle unconditionally. This may be undesirable in some circumstances.
> Some alternatives:
> * Do not close it
> * Only close it if the {{use_count}} of the {{shared_ptr}} is 1, so we know that no one else has a copy of the shared_ptr



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