Impala Public Jenkins has submitted this change and it was merged. ( 
http://gerrit.cloudera.org:8080/10747 )

Change subject: IMPALA-7181: Fix flaky test 
shell/test_shell_commandline.py::TestImpalaShell::test_socket_opening
......................................................................

IMPALA-7181: Fix flaky test 
shell/test_shell_commandline.py::TestImpalaShell::test_socket_opening

test_shell_commandline.py::TestImpalaShell::test_socket_opening
uses netcat to listen to an ephemeral port to verify the expected
socket opening behavior of impala-shell.

This port number is fixed to 42000. When this port happens to
be used by another outbound socket, this test will fail.

This change refactors the test to use socket.bind(). The port used
in this test is no longer fixed and will be picked automatically.
This change also adds the proper cleanup logics to the various
subprocess.Popen objects used in the test.

Change-Id: Idd64632ded936d49fc404bcac75588dd7886be44
Reviewed-on: http://gerrit.cloudera.org:8080/10747
Reviewed-by: Impala Public Jenkins <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
---
M tests/shell/test_shell_commandline.py
1 file changed, 38 insertions(+), 28 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: Idd64632ded936d49fc404bcac75588dd7886be44
Gerrit-Change-Number: 10747
Gerrit-PatchSet: 8
Gerrit-Owner: Vincent Tran <[email protected]>
Gerrit-Reviewer: Csaba Ringhofer <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Philip Zeyliger <[email protected]>
Gerrit-Reviewer: Vincent Tran <[email protected]>

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