[TWTR][CX-17516] Queue tasks already being handled by the executor (#26)

* [TWTR][CX-17516] Queue tasks even if already being handled by the executor

* [AIRFLOW-4332] Upgrade sqlalchemy to remove security Vulnerability

Author: aoen

airflow/jobs.py

@@ -1224,10 +1224,9 @@ def _find_executable_task_instances(self, simple_dag_bag, states, session=None):
 
                 if self.executor.has_task(task_instance):
                     self.log.debug(
-                        "Not handling task %s as the executor reports it is running",
+                        "Still handling task %s even though as the executor reports it is running",
                         task_instance.key
                     )
-                    continue
                 executable_tis.append(task_instance)
                 open_slots -= 1
                 dag_id_to_possibly_running_task_count[dag_id] += 1

airflow/version.py

@@ -18,4 +18,4 @@
 # under the License.
 #
 
-version = '1.10.0+twtr23'
+version = '1.10.0+twtr24'

setup.py

@@ -297,7 +297,7 @@ def do_setup():
             'python-nvd3==0.15.0',
             'requests>=2.5.1, <3',
             'setproctitle>=1.1.8, <2',
-            'sqlalchemy>=1.1.15, <1.2.0',
+            'sqlalchemy>=1.1.15, <1.4.0',
             'tabulate>=0.7.5, <0.8.0',
             'tenacity==4.8.0',
             'thrift>=0.9.2',