handle empty string for qps workers in driver and dont quit them on netperf

1 files changed, 4 insertions, 3 deletions

diff --git a/tools/run_tests/run_performance_tests.py b/tools/run_tests/run_performance_tests.py
index 1d0c98fb69..5e6ff44f4f 100755
--- a/tools/run_tests/run_performance_tests.py
+++ b/tools/run_tests/run_performance_tests.py
@@ -464,9 +464,10 @@ for scenario in scenarios:
     try:
       for worker in scenario.workers:
         worker.start()
-      scenario_failures, resultset = jobset.run([scenario.jobspec,
-                                                create_quit_jobspec(scenario.workers, remote_host=args.remote_driver_host)],
-                                                newline_on_success=True, maxjobs=1)
+      jobs = [scenario.jobspec]
+      if len(scenario.workers) > 0:
+        jobs.append(create_quit_jobspec(scenario.workers, remote_host=args.remote_driver_host))
+      scenario_failures, resultset = jobset.run(jobs, newline_on_success=True, maxjobs=1)
       total_scenario_failures += scenario_failures
       merged_resultset = dict(itertools.chain(merged_resultset.iteritems(),
                                               resultset.iteritems()))