[Impala-ASF-CR] IMPALA-10027: configurable default anonymous user

["Tim Armstrong (Code Review)" <ge...@cloudera.org>]

Tim Armstrong has uploaded a new patch set (#2). ( http://gerrit.cloudera.org:8080/16902 )

Change subject: IMPALA-10027: configurable default anonymous user
......................................................................

IMPALA-10027: configurable default anonymous user

A username can be determined for a session via two mechanisms:
* In a secure env, the user is authenticated by LDAP or Kerberos
* In an unsecure env, the client specifies the user name, either
  as a parameter to the OpenSession API (HS2) or as a parameter
  to the first query run (beeswax)

This patch affects what happens if neither of the above mechanisms
is used. Previously we would end up with the username being an
empty string, but this makes Ranger unhappy. Hive uses the name
"anonymous" in this situation, so we change Impala's behaviour too.

This is configurable by -anonymous_user_name. -anonymous_user_name=
reverts to the old behaviour.

Test
* Add an end-to-end test that exercises this via impala-shell for
  HS2, HS2-HTTP and beeswax protocols.
* Tweak a couple of existing tests that depended on the previous
  behavior.

Change-Id: I6db491231fa22484aed476062b8fe4c8f69130b0
---
M be/src/common/global-flags.cc
M be/src/service/impala-beeswax-server.cc
M be/src/service/impala-hs2-server.cc
M fe/src/test/java/org/apache/impala/service/JdbcTest.java
M tests/custom_cluster/test_admission_controller.py
M tests/shell/test_shell_commandline.py
6 files changed, 44 insertions(+), 8 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/02/16902/2
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I6db491231fa22484aed476062b8fe4c8f69130b0
Gerrit-Change-Number: 16902
Gerrit-PatchSet: 2
Gerrit-Owner: Tim Armstrong <ta...@cloudera.com>