avoiding clog submissions

Author: antgonza

qiita_db/processing_job.py

@@ -1636,6 +1636,9 @@ def _update_and_launch_children(self, mapping):
         # Submit all the children that already have all the input parameters
         for c in ready:
             c.submit()
+            # some jobs create several children jobs/validators and this can
+            # clog the submission process; giving it a second to avoid this
+            sleep(1)
 
     @property
     def outputs(self):