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https://issues.apache.org/jira/browse/AIRFLOW-2201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16594761#comment-16594761
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Jon Davies commented on AIRFLOW-2201:
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Possibly related to https://issues.apache.org/jira/browse/AIRFLOW-2969
> Scheduler processes dags every second
> -------------------------------------
>
> Key: AIRFLOW-2201
> URL: https://issues.apache.org/jira/browse/AIRFLOW-2201
> Project: Apache Airflow
> Issue Type: Bug
> Affects Versions: 1.9.0
> Reporter: John Arnold
> Priority: Critical
>
> Building latest master.
>
> The scheduler appears to be running continuously, not respecting
> scheduler_heartbeat_sec = 30
>
> Logs are filled up with messages like:
> Mar8 23:20:36 netdocker1-eastus2 INFO :[2018-03-08 23:20:36,826]
> \{dag_processing.py:468} INFO - Processor for
> /var/lib/airflow/dags/test_nt.py finished
> Mar8 23:20:36 netdocker1-eastus2 INFO :[2018-03-08 23:20:36,831]
> \{dag_processing.py:543} INFO - Started a process (PID: 64) to generate tasks
> for /var/lib/airflow/dags/test_nt.py
> Mar8 23:20:37 netdocker1-eastus2 INFO :[2018-03-08 23:20:37,834]
> \{dag_processing.py:468} INFO - Processor for
> /var/lib/airflow/dags/test_nt.py finished
> Mar8 23:20:37 netdocker1-eastus2 INFO :[2018-03-08 23:20:37,838]
> \{dag_processing.py:543} INFO - Started a process (PID: 66) to generate tasks
> for /var/lib/airflow/dags/test_nt.py
> Mar8 23:20:38 netdocker1-eastus2 INFO :[2018-03-08 23:20:38,842]
> \{dag_processing.py:468} INFO - Processor for
> /var/lib/airflow/dags/test_nt.py finished
> Mar8 23:20:38 netdocker1-eastus2 INFO :[2018-03-08 23:20:38,846]
> \{dag_processing.py:543} INFO - Started a process (PID: 68) to generate tasks
> for /var/lib/airflow/dags/test_nt.py
> Mar8 23:20:39 netdocker1-eastus2 INFO :[2018-03-08 23:20:39,850]
> \{dag_processing.py:468} INFO - Processor for
> /var/lib/airflow/dags/test_nt.py finished
> Mar8 23:20:39 netdocker1-eastus2 INFO :[2018-03-08 23:20:39,856]
> \{dag_processing.py:543} INFO - Started a process (PID: 70) to generate tasks
> for /var/lib/airflow/dags/test_nt.py
> Mar8 23:20:40 netdocker1-eastus2 INFO :[2018-03-08 23:20:40,863]
> \{dag_processing.py:468} INFO - Processor for
> /var/lib/airflow/dags/test_nt.py finished
> Mar8 23:20:40 netdocker1-eastus2 INFO :[2018-03-08 23:20:40,867]
> \{dag_processing.py:543} INFO - Started a process (PID: 72) to generate tasks
> for /var/lib/airflow/dags/test_nt.py
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