Impala Public Jenkins has submitted this change and it was merged. ( 
http://gerrit.cloudera.org:8080/18493 )

Change subject: IMPALA-10745: Support Kerberos over HTTP for impala-shell
......................................................................

IMPALA-10745: Support Kerberos over HTTP for impala-shell

This patch ports the implementation of GSSAPI authentication over http
transport from Impyla (https://github.com/cloudera/impyla/pull/415) to
impala-shell.

The implementation adds a new dependency on 'kerberos' python module,
which is a pip-installed module distributed under Apache License Version
2.
When using impala-shell with Kerberos over http, it is assumed that the
host has a preexisting kinit-cached Kerberos ticket that impala-shell
can pass to the server automatically without the user to reenter the
password.

Testing:
 - Passed exhaustive tests.
 - Tested manually on a real cluster with a full Kerberos setup.

Change-Id: Ia59ba4004490735162adbd468a00a962165c5abd
Reviewed-on: http://gerrit.cloudera.org:8080/18493
Reviewed-by: Csaba Ringhofer <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
---
M infra/python/deps/requirements.txt
M shell/ImpalaHttpClient.py
M shell/impala_client.py
M shell/impala_shell.py
M shell/packaging/requirements.txt
M shell/shell_exceptions.py
6 files changed, 183 insertions(+), 81 deletions(-)

Approvals:
  Csaba Ringhofer: Looks good to me, approved
  Impala Public Jenkins: Verified

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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: Ia59ba4004490735162adbd468a00a962165c5abd
Gerrit-Change-Number: 18493
Gerrit-PatchSet: 4
Gerrit-Owner: Wenzhe Zhou <[email protected]>
Gerrit-Reviewer: Csaba Ringhofer <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Wenzhe Zhou <[email protected]>

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