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https://issues.apache.org/jira/browse/HADOOP-12376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15013264#comment-15013264
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Steve Loughran commented on HADOOP-12376:
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that's good to see the plan for a fix, worrying to see the quote "This change
is very likely to break things in subtle or even non-subtle ways,".
> S3NInputStream.close() downloads the remaining bytes of the object from S3
> --------------------------------------------------------------------------
>
> Key: HADOOP-12376
> URL: https://issues.apache.org/jira/browse/HADOOP-12376
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs/s3
> Affects Versions: 2.6.0, 2.7.1
> Reporter: Steve Loughran
> Assignee: Ajith S
>
> This is the same as HADOOP-11570, possibly the swift code has the same
> problem.
> Apparently (as raised on ASF lists), when you close an s3n input stream, it
> reads through the remainder of the file. This kills performance on partial
> reads of large files.
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