rawwar opened a new pull request, #57131:
URL: https://github.com/apache/airflow/pull/57131

   Failure happened while downgrading. This PR fixes it: 
   ```
   self.get_context().run_migrations(**kw)
     File 
"/usr/local/lib/python3.12/site-packages/alembic/runtime/migration.py", line 
623, in run_migrations
       step.migration_fn(**kw)
     File 
"/usr/local/lib/python3.12/site-packages/airflow/migrations/versions/0135_2_9_0_add_run_id_to_audit_log_table_and_change_event_name_length.py",
 line 65, in downgrade
       with op.batch_alter_table("log") as batch_op:
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
     File "/usr/local/lib/python3.12/contextlib.py", line 144, in __exit__
       next(self.gen)
     File "/usr/local/lib/python3.12/site-packages/alembic/operations/base.py", 
line 397, in batch_alter_table
       impl.flush()
     File 
"/usr/local/lib/python3.12/site-packages/alembic/operations/batch.py", line 
115, in flush
       fn(*arg, **kw)
     File "/usr/local/lib/python3.12/site-packages/alembic/ddl/postgresql.py", 
line 188, in alter_column
       super().alter_column(
     File "/usr/local/lib/python3.12/site-packages/alembic/ddl/impl.py", line 
280, in alter_column
       self._exec(
     File "/usr/local/lib/python3.12/site-packages/alembic/ddl/impl.py", line 
246, in _exec
       return conn.execute(construct, params)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     File 
"/usr/local/lib/python3.12/site-packages/sqlalchemy/future/engine.py", line 
286, in execute
       return self._execute_20(
              ^^^^^^^^^^^^^^^^^
     File "/usr/local/lib/python3.12/site-packages/sqlalchemy/engine/base.py", 
line 1710, in _execute_20
       return meth(self, args_10style, kwargs_10style, execution_options)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     File "/usr/local/lib/python3.12/site-packages/sqlalchemy/sql/ddl.py", line 
80, in _execute_on_connection
       return connection._execute_ddl(
              ^^^^^^^^^^^^^^^^^^^^^^^^
     File "/usr/local/lib/python3.12/site-packages/sqlalchemy/engine/base.py", 
line 1477, in _execute_ddl
       ret = self._execute_context(
             ^^^^^^^^^^^^^^^^^^^^^^
     File "/usr/local/lib/python3.12/site-packages/sqlalchemy/engine/base.py", 
line 1953, in _execute_context
       self._handle_dbapi_exception(
     File "/usr/local/lib/python3.12/site-packages/sqlalchemy/engine/base.py", 
line 2134, in _handle_dbapi_exception
       util.raise_(
     File "/usr/local/lib/python3.12/site-packages/sqlalchemy/util/compat.py", 
line 211, in raise_
       raise exception
     File "/usr/local/lib/python3.12/site-packages/sqlalchemy/engine/base.py", 
line 1910, in _execute_context
       self.dialect.do_execute(
     File 
"/usr/local/lib/python3.12/site-packages/sqlalchemy/engine/default.py", line 
736, in do_execute
       cursor.execute(statement, parameters)
   sqlalchemy.exc.IntegrityError: (psycopg2.errors.NotNullViolation) column 
"event" of relation "log" contains null values
   ```


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