Improved UX when running a job with its dependencies, when it has no …

…dependencies AND when no job depend on it (i.e. job alone). Now doesn't crash and just run that job.

yaetos/etl_utils.py

@@ -1109,13 +1109,16 @@ def __init__(self, launch_jargs, app_name):
         df = self.create_connections_jobs(launch_jargs.storage, launch_jargs.merged_args)
         logger.debug('Flow app_name : {}, connection_table: {}'.format(app_name, df))
         graph = self.create_global_graph(df)  # top to bottom
-        tree = self.create_local_tree(graph, nx.DiGraph(), app_name)  # bottom to top
-        self.leafs = self.get_leafs(tree, leafs=[])  # bottom to top
+        if graph.has_node(app_name):
+            tree = self.create_local_tree(graph, nx.DiGraph(), app_name)  # bottom to top
+            self.leafs = self.get_leafs(tree, leafs=[])  # bottom to top
+            launch_jargs.cmd_args.pop('job_name', None)  # removing since it should be pulled from yml and not be overriden by cmd_args.
+            launch_jargs.job_args.pop('job_name', None)  # same
+        else:
+            self.leafs = [app_name]
         logger.info('Sequence of jobs to be run: {}'.format(self.leafs))
         logger.info('-' * 80)
         logger.info('-')
-        launch_jargs.cmd_args.pop('job_name', None)  # removing since it should be pulled from yml and not be overriden by cmd_args.
-        launch_jargs.job_args.pop('job_name', None)  # same
         self.launch_jargs = launch_jargs
 
     def run_pipeline(self, sc, sc_sql):