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https://issues.apache.org/jira/browse/AIRFLOW-401?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16089193#comment-16089193
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Giampiero Recco commented on AIRFLOW-401:
-----------------------------------------
Update. Switching from rabbitmq to postgres fixed the issue for me. Everything
seems fine now.
For the future passersby, to use celery with postgres you can use the following
config lines in airflow.cfg:
broker_url = sqla+postgresql://user:password@localhost:5432/airflowdb
celery_result_backend = db+postgresql://user:password@localhost:5432/airflowdb
> 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: executor, scheduler
> Affects Versions: Airflow 1.7.1.3
> Reporter: Nadeem Ahmed Nazeer
> Assignee: Bolke de Bruin
> Priority: Minor
> Attachments: Dag_code.txt, schduler_cpu100%.png,
> scheduler_stuck_7hours.png, scheduler_stuck.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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