NameNode HTTP server temporarily changes login user
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Key: HDFS-2194
URL: https://issues.apache.org/jira/browse/HDFS-2194
Project: Hadoop HDFS
Issue Type: Bug
Components: name-node, security
Affects Versions: 0.23.0
Reporter: Todd Lipcon
Priority: Minor
When starting the NameNode HTTP server, it temporarily logs in as the
configured HTTP principal, then does a {{getLoginUser().doAs()}} to start the
server with the correct principal. This mucks with global state unnecessarily
and complicates that code. Instead, I think we could probably use
{{loginUserFromKeytabAndReturnUgi}} to be a little cleaner.
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