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e1d1428181
In order to improve usability, this patch makes Impala shell show query processing status while the query is running. The patch enables shell option live_progress by default when a user launches impala shell in the interactive mode. The patch also adds a new command line flag "--disable_live_progress", which allows a user to disable live_progress at runtime. In the interactive mode, a user can disable live_progress by either using the command line flag or setting the option as False in the config file. As for in the non-interactive mode (when the -q or -f options are used), live reporting is not supported. Impala-shell will disable live_progress if the mode is detected. Testing: - Added and updated tests in test_shell_interactive.py and test_shell_commandline.py - Successfully ran all shell related tests Change-Id: I3765b775f663fa227e59728acffe4d5ea9a5e2d3 Reviewed-on: http://gerrit.cloudera.org:8080/15219 Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com> Reviewed-by: Tim Armstrong <tarmstrong@cloudera.com>