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7f3f63424f
gcovr is a python library that uses gcov to generate code coverage reports. This adds gcovr to the python dependencies and adds bin/impala-gcovr to provide easy access to gcovr's command line. gcovr 3.4 supports python 2.6+. This also adds bin/coverage_helper.sh to provide a simplified interface to generate reports and zero coverage counters. Code coverage data is written out when a program exits, so it is important to avoid hard kills to shut down the impalads when generating coverage. This modifies testdata/bin/kill-all.sh to call start-impala-cluster.py --kill when shutting down the minicluster to try to avoid doing a hard kill. It will still do a hard kill if impala is still running after the softer kill. Change-Id: I5b2e0b794c64f9343ec976de7a3f235e54d2badd Reviewed-on: http://gerrit.cloudera.org:8080/10791 Reviewed-by: Joe McDonnell <joemcdonnell@cloudera.com> Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>