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https://issues.apache.org/jira/browse/HADOOP-13154?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15285746#comment-15285746
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Vinod Kumar Vavilapalli commented on HADOOP-13154:
--------------------------------------------------

[~steve_l], looks like they've been around for a while. git blame on both these 
methods point to the following commit, back to you
{code}
commit 27c4e90efce04e1b1302f668b5eb22412e00d033
Author: Steve Loughran <ste...@apache.org>
Date:   Thu May 12 19:24:20 2016 +0100

    HADOOP-13028 add low level counter metrics for S3A; use in read performance 
tests. contributed by: stevel
    patch includes
    HADOOP-12844 Recover when S3A fails on IOException in read()
    HADOOP-13058 S3A FS fails during init against a read-only FS if multipart 
purge
    HADOOP-13047 S3a Forward seek in stream length to be configurable
{code}

> S3AFileSystem printAmazonServiceException/printAmazonClientException appear 
> copy & paste of AWS examples
> --------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-13154
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13154
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 2.7.2
>            Reporter: Steve Loughran
>            Priority: Blocker
>
> The logging code in {{S3AFileSystem.printAmazonServiceException()}} and 
> {{printAmazonClientException}} appear to be paste + edits of the example code 
> in  the amazon SDK, such as 
> [http://docs.aws.amazon.com/AmazonS3/latest/dev/ListingObjectKeysUsingJava.html]]
> Either we review the license to validate it, and add credits to the code if 
> compatible, or we rework. HADOOP-13130 would be the place to do that, as it 
> is changing exception handling anyway.
> tagging as blocker as it is license related



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