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https://issues.apache.org/jira/browse/ARROW-9868?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Neal Richardson resolved ARROW-9868.
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Resolution: Fixed
Issue resolved by pull request 8101
[https://github.com/apache/arrow/pull/8101]
> [C++] Provide utility for copying files between filesystems
> -----------------------------------------------------------
>
> Key: ARROW-9868
> URL: https://issues.apache.org/jira/browse/ARROW-9868
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Neal Richardson
> Assignee: Ben Kietzman
> Priority: Major
> Labels: filesystem, pull-request-available, s3
> Fix For: 2.0.0
>
> Time Spent: 1h 50m
> Remaining Estimate: 0h
>
> {{CopyStream}} in arrow/filesystem/util_internal.h does this, but we should
> expose it, multithread it (can read in one thread while the other thread
> writes), and further see if there are filesystem-specific optimizations (e.g.
> S3 multipart uploading/downloading). We may also want a version that takes a
> FileSelector or vector of paths and parallelizes the operations on them.
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