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https://issues.apache.org/jira/browse/AIRFLOW-6704?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17132817#comment-17132817
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ASF GitHub Bot commented on AIRFLOW-6704:
-----------------------------------------
yuqian90 commented on pull request #7324:
URL: https://github.com/apache/airflow/pull/7324#issuecomment-642350478
Hi @shanit-saha
> execution_date=datetime.now()
I think this line is the cause of the problem. I believe what you actually
want to express is to trigger `dag_process_pos` with `execution_date` equal to
the datetime **at the time of executing** `TriggerDagRunOperator`.
However, doing `execution_date=datetime.now()` at the time of constructing
`TriggerDagRunOperator` means you are triggering `dag_process_pos` at the time
of **parsing** the DAG that contains the `TriggerDagRunOperator`. Since the
value of `execution_date` keeps changing each time the DAG is parsed, the
result is some kind of unexpected errors.
I think you already realized if you leave `execution_date` as None,
`TriggerDagRunOperator` defaults to `timezone.utcnow().isoformat()` which does
what you need. Alternatively you can also set `execution_date` to a jinja
template str yourself. The gist is that you should not have an argument that
keeps changing whenever the DAG is parsed.
If you think the doc of `TriggerDagRunOperator` needs to be improved. Pls
create an issue for that separately.
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> TaskInstance.operator is not set when task is marked success or failed in the
> Web UI
> ------------------------------------------------------------------------------------
>
> Key: AIRFLOW-6704
> URL: https://issues.apache.org/jira/browse/AIRFLOW-6704
> Project: Apache Airflow
> Issue Type: Bug
> Components: models
> Affects Versions: 1.10.7
> Reporter: Qian Yu
> Assignee: Qian Yu
> Priority: Major
> Fix For: 1.10.10
>
>
> {{TaskInstance.operator}} is currently only set when task is executed. But if
> a task is marked success or failed, the {{operator}} field is left as
> {{None}}.
> This causes bugs when some code tries to use the operator field to find the
> name of the class.
> The fix is trivial, just set {{TaskInstance.operator}} in its constructor.
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