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Add support for Kerberized Hadoop

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Originally posted on UserVoice
We would like to use the Integrator to publish to a  Kerberized Hadoop cluster (Hadoop that uses Kerberos tickets). Currently this is not supported by the Integrator (Enhancement 148795.), and if you try to set up a Hadoop target that is a Kerberized Hadoop cluster, you will see the error:
"HadoopHDFSWriter::GetHomeDirectoryAsync: Request failed. Authentication required Result: ...401 Authentication required..."

Current workaround: publish to a SQL Server target instead and then use a Hadoop tool such as Sqoop to bulk copy data from the SQL Server to Hadoop.

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