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This patch adds a way to allow for dynamic progress reporting in the shell. There are two new command line flags for the shell --live_progress - will print the completed vs total # of scan ranges --live_summary - prints an updated exec summary In addition to the command line flags, these options can be set from within the shell using: set LIVE_SUMMARY=True set LIVE_PROGRESS=True The new options will be listed under shell options. Both reports will be updated at most every second, for longer running queries it will be adjusted to the time between two RPC calls to get the query status. To provide this information in the ExecSummary, the Thrift structure for the ExecSummary was extended to contain a progress indicator. The output is printed to stderr and only available in interactive mode. An example video is available here: https://asciinema.org/a/5wi7ypckx4ol4ha1hlg3e3q1k Change-Id: I70b2ab5fa74dc2ba5bc3b338ef13ddc6ccf367d2 Reviewed-on: http://gerrit.cloudera.org:8080/508 Tested-by: Internal Jenkins Reviewed-by: Martin Grund <mgrund@cloudera.com>