[jira] [Commented] (HADOOP-14606) S3AInputStream: Handle http stream skip(n) skipping < n bytes in a forward seek

["Wangda Tan (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-14606?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16366583#comment-16366583 ] 

Wangda Tan commented on HADOOP-14606:
-------------------------------------

Moved to 3.2.0, please revert if you disagree.

> S3AInputStream: Handle http stream skip(n) skipping < n bytes in a forward seek
> -------------------------------------------------------------------------------
>
>                 Key: HADOOP-14606
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14606
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 2.8.1
>            Reporter: Steve Loughran
>            Priority: Critical
>
> There's some hints in the InputStream docs that {{skip(n)}} may skip <n bytes. Codepaths only seem to do this if read() returns -1, meaning end of stream is reached.
> If that happens when doing a forward seek via skip, then we have got our numbers wrong and are in trouble. Look for a negative response, log @ ERROR and revert to a close/reopen seek to an absolute position.
> *I have no evidence of this acutally occurring*



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