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Posted to issues@arrow.apache.org by "Antoine Pitrou (Jira)" <ji...@apache.org> on 2019/12/18 11:39:00 UTC

[jira] [Commented] (ARROW-500) [C++] Implement concurrent IO read queue for file-like sources

    [ https://issues.apache.org/jira/browse/ARROW-500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16999065#comment-16999065 ] 

Antoine Pitrou commented on ARROW-500:
--------------------------------------

We now have {{MakeInputStreamIterator}} and {{MakeReadaheadIterator}}. Does this solve the issue?

> [C++] Implement concurrent IO read queue for file-like sources
> --------------------------------------------------------------
>
>                 Key: ARROW-500
>                 URL: https://issues.apache.org/jira/browse/ARROW-500
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: C++
>            Reporter: Wes McKinney
>            Priority: Major
>              Labels: filesystem
>
> In a multithreaded setting, we may spawn many threads which will have access to a shared IO resources. It may be useful to create a thread-safe IO queue implementing the {{arrow::io::ReadableFileInterface}}, limiting the number of concurrent requests to the desired number (which may be 1, for services not permitting concurrent access).



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