[jira] [Resolved] (PARQUET-1993) [C++] Expose when prefetching completes

["Antoine Pitrou (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PARQUET-1993?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antoine Pitrou resolved PARQUET-1993.
-------------------------------------
    Fix Version/s: cpp-1.6.0
       Resolution: Fixed

Issue resolved by pull request 9613
[https://github.com/apache/arrow/pull/9613]

> [C++] Expose when prefetching completes
> ---------------------------------------
>
>                 Key: PARQUET-1993
>                 URL: https://issues.apache.org/jira/browse/PARQUET-1993
>             Project: Parquet
>          Issue Type: Improvement
>          Components: parquet-cpp
>            Reporter: David Li
>            Assignee: David Li
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: cpp-1.6.0
>
>          Time Spent: 2h
>  Remaining Estimate: 0h
>
> As a follow up to PARQUET-1820, we should let an application be notified when pre-buffering has completed (e.g. PreBuffer() should return Future<void>). This would let an application pre-buffer some amount of data (across multiple files and/or row groups) and then decode data as it becomes available instead of blocking.
> A more ergonomic API would be to expose Future<RecordBatchReader> or something along those lines.



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