Revert 9c5d9a8 (apache#16039)

UPDATING.md

@@ -26,8 +26,6 @@ assists people when migrating to a new version.
 - [15909](https://github.com/apache/incubator-superset/pull/15909): a change which
 drops a uniqueness criterion (which may or may not have existed) to the tables table. This constraint was obsolete as it is handled by the ORM due to differences in how MySQL, PostgreSQL, etc. handle uniqueness for NULL values.
 
-- [15927](https://github.com/apache/superset/pull/15927): Upgrades Celery to 5.x. Per the [upgrading](https://docs.celeryproject.org/en/stable/history/whatsnew-5.0.html#upgrading-from-celery-4-x) instructions Celery 5.0 introduces a new CLI implementation which is not completely backwards compatible. Please ensure global options are positioned before the sub-command.
-
 - [13772](https://github.com/apache/superset/pull/13772): Row level security (RLS) is now enabled by default. To activate the feature, please run `superset init` to expose the RLS menus to Admin users.
 
 - [13980](https://github.com/apache/superset/pull/13980): Data health checks no longer use the metadata database as an interim cache. Though non-breaking, deployments which implement complex logic should likely memoize the callback function. Refer to documentation in the confg.py file for more detail.

requirements/base.txt

@@ -11,7 +11,7 @@ aiohttp==3.7.2
     # via slackclient
 alembic==1.4.3
     # via flask-migrate
-amqp==5.0.6
+amqp==2.6.1
     # via kombu
 apispec[yaml]==3.3.2
     # via flask-appbuilder
@@ -25,15 +25,15 @@ babel==2.8.0
     # via flask-babel
 backoff==1.10.0
     # via apache-superset
-billiard==3.6.4.0
+billiard==3.6.3.0
     # via celery
 bleach==3.3.0
     # via apache-superset
 brotli==1.0.9
     # via flask-compress
 cachelib==0.1.1
     # via apache-superset
-celery==5.1.2
+celery==4.4.7
     # via apache-superset
 cffi==1.14.3
     # via cryptography
@@ -42,18 +42,8 @@ chardet==3.0.4
 click==7.1.2
     # via
     #   apache-superset
-    #   celery
-    #   click-didyoumean
-    #   click-plugins
-    #   click-repl
     #   flask
     #   flask-appbuilder
-click-didyoumean==0.0.3
-    # via celery
-click-plugins==1.1.1
-    # via celery
-click-repl==0.2.0
-    # via celery
 colorama==0.4.4
     # via
     #   apache-superset
@@ -142,7 +132,7 @@ jinja2==2.11.3
     #   flask-babel
 jsonschema==3.2.0
     # via flask-appbuilder
-kombu==5.1.0
+kombu==4.6.11
     # via celery
 korean-lunar-calendar==0.2.1
     # via holidays
@@ -190,8 +180,6 @@ polyline==1.4.0
     # via apache-superset
 prison==0.1.3
     # via flask-appbuilder
-prompt-toolkit==3.0.19
-    # via click-repl
 pyarrow==4.0.1
     # via apache-superset
 pycparser==2.20
@@ -247,7 +235,6 @@ simplejson==3.17.2
 six==1.15.0
     # via
     #   bleach
-    #   click-repl
     #   cryptography
     #   flask-jwt-extended
     #   flask-talisman
@@ -285,13 +272,10 @@ typing-extensions==3.7.4.3
     #   apache-superset
 urllib3==1.25.11
     # via selenium
-vine==5.0.0
+vine==1.3.0
     # via
     #   amqp
     #   celery
-    #   kombu
-wcwidth==0.2.5
-    # via prompt-toolkit
 webencodings==0.5.1
     # via bleach
 werkzeug==1.0.1

requirements/testing.txt

@@ -53,6 +53,8 @@ pexpect==4.8.0
     # via ipython
 pickleshare==0.7.5
     # via ipython
+prompt-toolkit==3.0.8
+    # via ipython
 ptyprocess==0.6.0
     # via pexpect
 pyfakefs==4.4.0
@@ -78,6 +80,8 @@ statsd==3.3.0
     # via -r requirements/testing.in
 traitlets==5.0.5
     # via ipython
+wcwidth==0.2.5
+    # via prompt-toolkit
 websocket-client==0.57.0
     # via docker
 

setup.py

@@ -67,7 +67,7 @@ def get_git_sha() -> str:
         "backoff>=1.8.0",
         "bleach>=3.0.2, <4.0.0",
         "cachelib>=0.1.1,<0.2",
-        "celery>=5.0.0, <6.0.0",
+        "celery>=4.3.0, <5.0.0, !=4.4.1",
         "click<8",
         "colorama",
         "croniter>=0.3.28",