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https://issues.apache.org/jira/browse/HADOOP-18295?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17555718#comment-17555718
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Steve Loughran commented on HADOOP-18295:
-----------------------------------------

You can do this today on a per Bucket basis just by setting the proxy host to 
an empty string.

Now there is a little detail here which relates to configurations and 
overrides, it may be better to put one or more spaces in there rather than a 
completely empty element.

Either way, this works today. You can set a global proxy setting and then 
disable it for those those you have inside of the firewall.

Try it!

I'm not sure what adding a new option would be except extra complication in 
testing and documentation. In particular, do you have to handle the situation 
where a bucket has been given an explicit proxy and it is also listed in the no 
proxy option

> Add S3A configuration property for `no_proxy` hosts
> ---------------------------------------------------
>
>                 Key: HADOOP-18295
>                 URL: https://issues.apache.org/jira/browse/HADOOP-18295
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs/s3
>            Reporter: Sam Kramer
>            Priority: Minor
>
> Seeing as there are configuration options for proxy host, port, username, and 
> password, there should also be an option to be able to provide to the S3 
> client a list of hosts to not use the proxy for (i.e. `no_proxy`)
>  
> I'm happy to contribute the code, but figured I'd file a ticket first to see 
> if this the hadoop community would be open to this idea or have any desire 
> for this feature. 



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