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https://issues.apache.org/jira/browse/ARROW-6180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16907344#comment-16907344
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Zherui Cao commented on ARROW-6180:
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I saw your patch, and Thanks for that.
> [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: Wes McKinney
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.15.0
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> 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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