[jira] [Commented] (HADOOP-14603) S3A input stream to support ByteBufferReadable

["Steve Loughran (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-14603?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16242039#comment-16242039 ] 

Steve Loughran commented on HADOOP-14603:
-----------------------------------------

For anyone expecting this: it's not on my todo list, so find someone else and implement & submit yourself. As well as the usual s3 test policy, this is going to need

* addition to filesystem.md to cover the input stream methods
* abstract contract test of them and implementations for those filesystems which implement the API
* StreamCapabilities implementations in the streams to declare their support, making it easier for callers to dynamically check.

> S3A input stream to support ByteBufferReadable
> ----------------------------------------------
>
>                 Key: HADOOP-14603
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14603
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3, test
>    Affects Versions: 2.8.1
>            Reporter: Steve Loughran
>            Priority: Minor
>
> S3AInputStream could support {{ByteBufferReadable, HasEnhancedByteBufferAccess}} and the operations to read into byte buffers.
> This is only if we can see a clear performance benefit from doing this or the API is being more broadly used



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