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https://issues.apache.org/jira/browse/ARROW-6180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16906614#comment-16906614
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Zherui Cao commented on ARROW-6180:
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[~wesmckinn] If I don't change BufferedInputStream, I need to make every
BufferedInputStream has their own copy of raw_ (RadomAccessFile) rather than
just have a shared pointer, it this what you mean?
> [C++] Create InputStream that references a segment of a RandomAccessFile
> ------------------------------------------------------------------------
>
> Key: ARROW-6180
> URL: https://issues.apache.org/jira/browse/ARROW-6180
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Wes McKinney
> Assignee: Zherui Cao
> Priority: Major
>
> If different threads wants to do buffered reads over different portions of a
> file (and they are unable to create their own separate file handles), they
> may clobber each other. I would propose creating an object that keeps the
> RandomAccessFile internally and implements the InputStream API in a way that
> is safe from other threads changing the file position
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