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https://issues.apache.org/jira/browse/HDFS-7985?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14378820#comment-14378820
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Haohui Mai commented on HDFS-7985:
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bq. Removing a configuration option sounds incompatible.
In general yes but (1) it enables a feature which means that it is backward
compatible, (2) setting {{dfs.webhdfs.enabled}} to false becomes an invalid
configuration now. The code should no longer allow this configuration.
Another thing is that it has little impacts on rolling upgrades. Maybe we can
document it in the release notes?
> WebHDFS should be always enabled
> --------------------------------
>
> Key: HDFS-7985
> URL: https://issues.apache.org/jira/browse/HDFS-7985
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Haohui Mai
> Assignee: Li Lu
> Attachments: HDFS-7985-032415.patch
>
>
> Since 2.7 the HTML 5 UI depends on WebHDFS. Disabling WebHDFS will break the
> UI, thus WebHDFS should be always enabled.
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