Allow YARN Provisioning to work with different usernames between Unix… #27
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… and Kerberos.
If you run the Dremio application as
dremiobut use a keytab for a user nameddata_reader, then YARN will fail to start with an error saying that the data_reader account does not have permission to "/user/dremio".This is because internally the hadoop-common library infers the current username from a system variable (user.name) instead of from the UGI. This change addresses this.