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https://issues.apache.org/jira/browse/AIRFLOW-401?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16876762#comment-16876762
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Jia-Liang, GUO commented on AIRFLOW-401:
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Also facing the same problem in version 1.10.3.
> scheduler gets stuck without a trace
> ------------------------------------
>
> Key: AIRFLOW-401
> URL: https://issues.apache.org/jira/browse/AIRFLOW-401
> Project: Apache Airflow
> Issue Type: Bug
> Components: executors, scheduler
> Affects Versions: 1.7.1.3
> Reporter: Nadeem Ahmed Nazeer
> Assignee: Bolke de Bruin
> Priority: Minor
> Labels: celery, kombu
> Attachments: Dag_code.txt, schduler_cpu100%.png, scheduler_stuck.png,
> scheduler_stuck_7hours.png
>
>
> The scheduler gets stuck without a trace or error. When this happens, the CPU
> usage of scheduler service is at 100%. No jobs get submitted and everything
> comes to a halt. Looks it goes into some kind of infinite loop.
> The only way I could make it run again is by manually restarting the
> scheduler service. But again, after running some tasks it gets stuck. I've
> tried with both Celery and Local executors but same issue occurs. I am using
> the -n 3 parameter while starting scheduler.
> Scheduler configs,
> job_heartbeat_sec = 5
> scheduler_heartbeat_sec = 5
> executor = LocalExecutor
> parallelism = 32
> Please help. I would be happy to provide any other information needed
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