Make default log verbosity ERROR, run tests with DEBUG

src/core/lib/support/log.c

@@ -79,9 +79,9 @@ void gpr_set_log_verbosity(gpr_log_severity min_severity_to_print) {
 
 void gpr_log_verbosity_init() {
   char *verbosity = gpr_getenv("GRPC_VERBOSITY");
-  if (verbosity == NULL) return;
 
-  gpr_atm min_severity_to_print = GPR_LOG_VERBOSITY_UNSET;
+  gpr_atm min_severity_to_print = GPR_LOG_SEVERITY_ERROR;
+  if (verbosity != NULL) {
     if (strcmp(verbosity, "DEBUG") == 0) {
       min_severity_to_print = (gpr_atm)GPR_LOG_SEVERITY_DEBUG;
     } else if (strcmp(verbosity, "INFO") == 0) {
@@ -90,6 +90,7 @@ void gpr_log_verbosity_init() {
       min_severity_to_print = (gpr_atm)GPR_LOG_SEVERITY_ERROR;
     }
     gpr_free(verbosity);
+  }
   if ((gpr_atm_no_barrier_load(&g_min_severity_to_print)) ==
       GPR_LOG_VERBOSITY_UNSET) {
     gpr_atm_no_barrier_store(&g_min_severity_to_print, min_severity_to_print);

tools/run_tests/run_tests.py

@@ -60,7 +60,9 @@ _ROOT = os.path.abspath(os.path.join(os.path.dirname(sys.argv[0]), '../..'))
 os.chdir(_ROOT)
 
 
-_FORCE_ENVIRON_FOR_WRAPPERS = {}
+_FORCE_ENVIRON_FOR_WRAPPERS = {
+  'GRPC_VERBOSITY': 'DEBUG',
+}
 
 
 _POLLING_STRATEGIES = {
@@ -158,7 +160,8 @@ class CLanguage(object):
       for polling_strategy in polling_strategies:
         env={'GRPC_DEFAULT_SSL_ROOTS_FILE_PATH':
                  _ROOT + '/src/core/lib/tsi/test_creds/ca.pem',
-             'GRPC_POLL_STRATEGY': polling_strategy}
+             'GRPC_POLL_STRATEGY': polling_strategy,
+             'GRPC_VERBOSITY': 'DEBUG'}
         shortname_ext = '' if polling_strategy=='all' else ' polling=%s' % polling_strategy
         if self.config.build_config in target['exclude_configs']:
           continue