[jira] [Created] (ARROW-6527) [C++] Add OutputStream::Write() variant taking an owned buffer

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

Antoine Pitrou created ARROW-6527:
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             Summary: [C++] Add OutputStream::Write() variant taking an owned buffer
                 Key: ARROW-6527
                 URL: https://issues.apache.org/jira/browse/ARROW-6527
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++
            Reporter: Antoine Pitrou


When Write() takes an arbitrary data pointer and needs to buffer it, it is mandatory to copy the data because the pointer may go stale, or the data may be overwritten.

Buf if the user has an immutable Buffer, then it should be enough to store the Buffer as necessary, without doing a memory copy. We could add a special Write() variant for that.



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