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https://issues.apache.org/jira/browse/AIRFLOW-3354?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16689397#comment-16689397
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Ash Berlin-Taylor commented on AIRFLOW-3354:
--------------------------------------------
{{start_date}} controls when a task is valid to be scheduled from - specifying
it as {{now()}} is a bug and not something an operator should do.
What were you trying to achieve by specifying that in the operator? Bear in
mind that Airflow parses your dag each and every time it runs tasks (and more
often too) so this value is constantly changing.
> Scheduler compares offset-naive and offset-aware dates
> ------------------------------------------------------
>
> Key: AIRFLOW-3354
> URL: https://issues.apache.org/jira/browse/AIRFLOW-3354
> Project: Apache Airflow
> Issue Type: Bug
> Affects Versions: 1.10.1
> Reporter: Jakub Powierza
> Priority: Major
>
> New version of Airflow (1.10.1rc1 and 1.10.1rc2) tries to compare
> offset-naive and offset-aware dates in Scheduler. I've tested a simple case
> with schedule set to "*/10 * * * *". I've tried to clean my developer
> instance with `airflow resetdb` and start from scratch but it does not help
> at all. This issue does not occur on stable version 1.10.0.
> My setup: Python 3.6 on Ubuntu 14.04 with Airflow Scheduler based on Celery
> with RabbitMQ backend.
> Exception found in Scheduler logs:
> {code:java}
> 2018-11-15 14:41:23,194:ERROR:airflow.processor:[CT=None] Got an exception!
> Propagating...
> Traceback (most recent call last):
> File
> "/home/jpowierz/my_project/venv/lib/python3.6/site-packages/airflow/jobs.py",
> line 389, in helper
> pickle_dags)
> File
> "/home/jpowierz/my_project/venv/lib/python3.6/site-packages/airflow/utils/db.py",
> line 74, in wrapper
> return func(*args, **kwargs)
> File
> "/home/jpowierz/my_project/venv/lib/python3.6/site-packages/airflow/jobs.py",
> line 1846, in process_file
> self._process_dags(dagbag, dags, ti_keys_to_schedule)
> File
> "/home/jpowierz/my_project/venv/lib/python3.6/site-packages/airflow/jobs.py",
> line 1426, in _process_dags
> dag_run = self.create_dag_run(dag)
> File
> "/home/jpowierz/my_project/venv/lib/python3.6/site-packages/airflow/utils/db.py",
> line 74, in wrapper
> return func(*args, **kwargs)
> File
> "/home/jpowierz/my_project/venv/lib/python3.6/site-packages/airflow/jobs.py",
> line 909, in create_dag_run
> external_trigger=False
> File
> "/home/jpowierz/my_project/venv/lib/python3.6/site-packages/airflow/utils/db.py",
> line 74, in wrapper
> return func(*args, **kwargs)
> File
> "/home/jpowierz/my_project/venv/lib/python3.6/site-packages/airflow/models.py",
> line 4270, in create_dagrun
> run.verify_integrity(session=session)
> File
> "/home/jpowierz/my_project/venv/lib/python3.6/site-packages/airflow/utils/db.py",
> line 70, in wrapper
> return func(*args, **kwargs)
> File
> "/home/jpowierz/my_project/venv/lib/python3.6/site-packages/airflow/models.py",
> line 5215, in verify_integrity
> if task.start_date > self.execution_date and not self.is_backfill:
> TypeError: can't compare offset-naive and offset-aware datetimes
> Process DagFileProcessor40-Process:
> Traceback (most recent call last):
> File "/usr/lib/python3.6/multiprocessing/process.py", line 249, in _bootstrap
> self.run()
> File "/usr/lib/python3.6/multiprocessing/process.py", line 93, in run
> self._target(*self._args, **self._kwargs)
> File
> "/home/jpowierz/my_project/venv/lib/python3.6/site-packages/airflow/jobs.py",
> line 389, in helper
> pickle_dags)
> File
> "/home/jpowierz/my_project/venv/lib/python3.6/site-packages/airflow/utils/db.py",
> line 74, in wrapper
> return func(*args, **kwargs)
> File
> "/home/jpowierz/my_project/venv/lib/python3.6/site-packages/airflow/jobs.py",
> line 1846, in process_file
> self._process_dags(dagbag, dags, ti_keys_to_schedule)
> File
> "/home/jpowierz/my_project/venv/lib/python3.6/site-packages/airflow/jobs.py",
> line 1426, in _process_dags
> dag_run = self.create_dag_run(dag)
> File
> "/home/jpowierz/my_project/venv/lib/python3.6/site-packages/airflow/utils/db.py",
> line 74, in wrapper
> return func(*args, **kwargs)
> File
> "/home/jpowierz/my_project/venv/lib/python3.6/site-packages/airflow/jobs.py",
> line 909, in create_dag_run
> external_trigger=False
> File
> "/home/jpowierz/my_project/venv/lib/python3.6/site-packages/airflow/utils/db.py",
> line 74, in wrapper
> return func(*args, **kwargs)
> File
> "/home/jpowierz/my_project/venv/lib/python3.6/site-packages/airflow/models.py",
> line 4270, in create_dagrun
> run.verify_integrity(session=session)
> File
> "/home/jpowierz/my_project/venv/lib/python3.6/site-packages/airflow/utils/db.py",
> line 70, in wrapper
> return func(*args, **kwargs)
> File
> "/home/jpowierz/my_project/venv/lib/python3.6/site-packages/airflow/models.py",
> line 5215, in verify_integrity
> if task.start_date > self.execution_date and not self.is_backfill:
> TypeError: can't compare offset-naive and offset-aware datetimes
> {code}
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