[jira] [Commented] (HADOOP-13588) ConfServlet doesn't set response content type according to the Accept header

["Weiwei Yang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-13588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15474129#comment-15474129 ] 

Weiwei Yang commented on HADOOP-13588:
--------------------------------------

Mark this one as incompatible change because it changes way of how clients send http request to get different content types from http response.

> ConfServlet doesn't set response content type according to the Accept header 
> -----------------------------------------------------------------------------
>
>                 Key: HADOOP-13588
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13588
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: conf
>            Reporter: Weiwei Yang
>            Assignee: Weiwei Yang
>
> ConfServlet provides a general service to retrieve daemon configurations. However it doesn't set response content-type according to *Accept* header. For example, by issuing following command, 
> {code}
> curl --header "Accept:application/json" http://${resourcemanager_host}:8088/conf
> {code}
> I am expecting the response would be in JSON format, however it is still in XML. I can only get JSON if I issue
> {code}
> curl http://${resourcemanager_host}:8088/conf?format="json"
> {code}
> This is not the common way how clients set content-type.



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