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https://issues.apache.org/jira/browse/ARROW-10420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17239351#comment-17239351
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Wes McKinney commented on ARROW-10420:
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If you are going to do this, I suggest creating an {{IOContext}} object or
similar so that it's easier to add other IO-related options later
> [C++] FileSystem::OpenInput{File,Stream} should accept a MemoryPool
> -------------------------------------------------------------------
>
> Key: ARROW-10420
> URL: https://issues.apache.org/jira/browse/ARROW-10420
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Affects Versions: 2.0.0
> Reporter: Ben Kietzman
> Assignee: Ben Kietzman
> Priority: Major
> Fix For: 3.0.0
>
>
> https://github.com/apache/arrow/pull/8533#issuecomment-717516187
> Currently buffers read from files opened by a FileSystem will always be
> allocated from the default memory pool. This is contrary to the Arrow
> convention of allowing control over memory allocation.
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