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https://issues.apache.org/jira/browse/ARROW-3782?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wes McKinney resolved ARROW-3782.
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Resolution: Fixed
Issue resolved by pull request 2988
[https://github.com/apache/arrow/pull/2988]
> [C++] Implement BufferedReader for C++
> --------------------------------------
>
> Key: ARROW-3782
> URL: https://issues.apache.org/jira/browse/ARROW-3782
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Wes McKinney
> Assignee: Wes McKinney
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.12.0
>
> Time Spent: 4h 20m
> Remaining Estimate: 0h
>
> This will be the reader companion to {{arrow::io::BufferedOutputStream}} and
> a C++-like version of the {{io.BufferedReader}} class in the Python standard
> library
> https://docs.python.org/3/library/io.html#io.BufferedReader
> We already have a partial version of this that's used in the Parquet library
> https://github.com/apache/arrow/blob/master/cpp/src/parquet/util/memory.h#L413
> In particular we need
> * Seek implemented for random access (it will invalidate the buffer)
> * Peek method returning {{shared_ptr<Buffer>}}, a zero copy view into
> buffered memory
> This is needed for ARROW-3126
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