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https://issues.apache.org/jira/browse/AIRFLOW-1172?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16049870#comment-16049870
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ASF subversion and git services commented on AIRFLOW-1172:
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Commit 0f55477ccb213ab96962d5eecce447f945b2889d in incubator-airflow's branch
refs/heads/master from [~sekikn]
[ https://git-wip-us.apache.org/repos/asf?p=incubator-airflow.git;h=0f55477 ]
[AIRFLOW-1172] Support nth weekday of the month cron expression
Closes #2321 from sekikn/AIRFLOW-1172
> 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
> Assignee: Kengo Seki
> Labels: scheduling
> Fix For: 1.8.0
>
>
> 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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