[jira] [Created] (AIRFLOW-2870) Migrations fail when upgrading from below cc1e65623dc7_add_max_tries_column_to_task_instance

["George Leslie-Waksman (JIRA)" <ji...@apache.org>]

George Leslie-Waksman created AIRFLOW-2870:
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             Summary: Migrations fail when upgrading from below cc1e65623dc7_add_max_tries_column_to_task_instance
                 Key: AIRFLOW-2870
                 URL: https://issues.apache.org/jira/browse/AIRFLOW-2870
             Project: Apache Airflow
          Issue Type: Bug
            Reporter: George Leslie-Waksman


Running migrations from below cc1e65623dc7_add_max_tries_column_to_task_instance.py fail with:

{noformat}
INFO  [alembic.runtime.migration] Context impl PostgresqlImpl.
INFO  [alembic.runtime.migration] Will assume transactional DDL.
INFO  [alembic.runtime.migration] Running upgrade 127d2bf2dfa7 -> cc1e65623dc7, add max tries column to task instance
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1182, in _execute_context
    context)
  File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/default.py", line 470, in do_execute
    cursor.execute(statement, parameters)
psycopg2.ProgrammingError: column task_instance.executor_config does not exist
LINE 1: ...ued_dttm, task_instance.pid AS task_instance_pid, task_insta...
{noformat}

The failure is occurring because cc1e65623dc7_add_max_tries_column_to_task_instance.py imports TaskInstance from the current code version, which exists in a post-migration state.



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