[jira] [Resolved] (HADOOP-16464) S3Guard in auth mode doesn't raise AccessDeniedException on read of 0-byte file

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

     [ https://issues.apache.org/jira/browse/HADOOP-16464?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steve Loughran resolved HADOOP-16464.
-------------------------------------
    Resolution: Won't Fix

I don't see this being fixable. The whole point of auth mode is we don't need to go near the store, and for a zero byte file, we can just return -1, always.

Closing as a WONTFIX; if people find this in the wild then we can point them as this JIRA

> S3Guard in auth mode doesn't raise AccessDeniedException on read of 0-byte file
> -------------------------------------------------------------------------------
>
>                 Key: HADOOP-16464
>                 URL: https://issues.apache.org/jira/browse/HADOOP-16464
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 3.3.0
>            Reporter: Steve Loughran
>            Priority: Minor
>
> This falls out of auth mode knowing the length of a file and skipping any S3 checks: it is not an error to read a 0-byte file, regardless of the readability of the file.
> * there's no check in open()
> * and read() just returns -1.
> I don't see if that is fixable, or if it merits. Maybe just include in the release notes



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