Check for postgres rows errors

CHANGELOG.md

@@ -12,6 +12,7 @@
 * [BUGFIX] No-longer-needed ingester operations for queries triggered by queriers and rulers are now canceled. #3178
 * [BUGFIX] Ruler: directories in the configured `rules-path` will be removed on startup and shutdown in order to ensure they don't persist between runs. #3195
 * [BUGFIX] Handle hash-collisions in the query path. #3192
+* [BUGFIX] Check for postgres rows errors. #3197
 
 ## 1.4.0-rc.0 in progress
 

pkg/configs/db/postgres/postgres.go

@@ -134,6 +134,13 @@ func (d DB) findConfigs(filter squirrel.Sqlizer) (map[string]userconfig.View, er
 		cfg.DeletedAt = deletedAt.Time
 		cfgs[userID] = cfg
 	}
+
+	// Check for any errors encountered.
+	err = rows.Err()
+	if err != nil {
+		return nil, err
+	}
+
 	return cfgs, nil
 }
 
@@ -272,6 +279,13 @@ func (d DB) findRulesConfigs(filter squirrel.Sqlizer) (map[string]userconfig.Ver
 		cfg.DeletedAt = deletedAt.Time
 		cfgs[userID] = cfg
 	}
+
+	// Check for any errors encountered.
+	err = rows.Err()
+	if err != nil {
+		return nil, err
+	}
+
 	return cfgs, nil
 }