Impala Public Jenkins has submitted this change and it was merged. ( 
http://gerrit.cloudera.org:8080/11540 )

Change subject: IMPALA-7555: Set socket timeout in impala-shell
......................................................................

IMPALA-7555: Set socket timeout in impala-shell

impala-shell does not set any socket timeout while connecting to the
impala server. This change sets a timeout on the socket before
connecting and unsets it back after successfully connecting. The default
timeout on this socket is 5 sec.
Usage: impala-shell --client_connect_timeout=<value in ms>

Testing:
1. Added a test where I create a random listening socket.
impala-shell (with ssl enabled) connects to this socket and
times out after 2 sec.

2. Created a kerberized impala cluster with ssl enabled and
connected to the impalad using an openssl client (block the
beeswax server thread to accept new connection) -

E.g. - openssl s_client -connect <IP Addr>:21000
Used impala-shell to connect to the same impalad later.
impala-shell timed out after the default of 5 sec.I verified
it manually.

Change-Id: I130fc47f7a83f591918d6842634b4e5787d00813
Reviewed-on: http://gerrit.cloudera.org:8080/11540
Reviewed-by: Impala Public Jenkins <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
---
M shell/impala_client.py
M shell/impala_shell.py
M shell/impala_shell_config_defaults.py
M shell/option_parser.py
M tests/shell/test_shell_commandline.py
5 files changed, 52 insertions(+), 15 deletions(-)

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

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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: I130fc47f7a83f591918d6842634b4e5787d00813
Gerrit-Change-Number: 11540
Gerrit-PatchSet: 12
Gerrit-Owner: Anuj Phadke <[email protected]>
Gerrit-Reviewer: Anuj Phadke <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Lars Volker <[email protected]>
Gerrit-Reviewer: Michael Ho <[email protected]>
Gerrit-Reviewer: Thomas Marshall <[email protected]>

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