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https://issues.apache.org/jira/browse/AIRFLOW-852?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16446689#comment-16446689
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Mohammed Tameem commented on AIRFLOW-852:
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Turn off the DAG. It will stop Airflow from scheduling those tasks. After
turning off mark success to downstream tasks. Then turn your DAG on again.
> Docs: Cancel a triggered dag
> ----------------------------
>
> Key: AIRFLOW-852
> URL: https://issues.apache.org/jira/browse/AIRFLOW-852
> Project: Apache Airflow
> Issue Type: Improvement
> Components: docs
> Reporter: Andi Pl
> Priority: Major
>
> Issue: Cancel an externally triggered dag.
> The dag is running and contains 200 parallel tasks. Only 3 are run at once,
> as the celery executor is limited to 3 in parallel.
> 23 tasks are finished till now.
> We want to cancel the execution of the missing tasks. But they are not queued
> yet. How can we cancel them?
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