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https://issues.apache.org/jira/browse/HADOOP-13588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16123779#comment-16123779
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John Zhuge commented on HADOOP-13588:
-------------------------------------
Backported to branch-2 and branch-2.8 for HADOOP-14260.
> ConfServlet should respect Accept request 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
> Fix For: 3.0.0-alpha2
>
> Attachments: HADOOP-13588.001.patch, HADOOP-13588.002.patch
>
>
> 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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