Sankar Hariappan created HIVE-17289:

             Summary: IMPORT should copy files without using doAs user.
                 Key: HIVE-17289
             Project: Hive
          Issue Type: Sub-task
          Components: HiveServer2, repl
    Affects Versions: 3.0.0
            Reporter: Sankar Hariappan
            Assignee: Sankar Hariappan
             Fix For: 3.0.0

Currently, IMPORT uses distcp to copy the larger files/large number of files 
from dump directory to table staging directory. But, this copy fails as distcp 
is always done with doAs user specified in hive.distcp.privileged.doAs, which 
is "hdfs' by default.
Need to remove usage of doAs user when try to distcp from IMPORT flow.
Also, need to set the default config for hive.distcp.privileged.doAs to "hive" 
as "hdfs" super-user is never allowed.

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