Nico Arianto created AIRFLOW-1172:
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Summary: CroniterNotAlphaError: [0 20 * * 1#1] is not acceptable
Key: AIRFLOW-1172
URL: https://issues.apache.org/jira/browse/AIRFLOW-1172
Project: Apache Airflow
Issue Type: Bug
Components: DagRun, scheduler
Affects Versions: 1.8.0
Environment: Docker base image: `python:2.7-slim`
Reporter: Nico Arianto
Based on the
[dag-runs|https://airflow.incubator.apache.org/scheduler.html#dag-runs]
documentation that we can refer to [cron
expression|https://en.wikipedia.org/wiki/Cron#CRON_expression] as a str which
in `Day of week` allows special character hash (`#`).
Unfortunately Airflow:1.8.0 doesn't support special character hash which in my
case we need to specify the DAG run to only triggers every 1st Tuesday of the
month.
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