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Posted to commits@airflow.apache.org by "Xiaodong DENG (JIRA)" <ji...@apache.org> on 2019/03/29 14:12:00 UTC
[jira] [Resolved] (AIRFLOW-4173) Improve scheduler performance by
avoid Unnecessary actions in SchedulerJob.process_file()
[ https://issues.apache.org/jira/browse/AIRFLOW-4173?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Xiaodong DENG resolved AIRFLOW-4173.
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Resolution: Resolved
> Improve scheduler performance by avoid Unnecessary actions in SchedulerJob.process_file()
> -----------------------------------------------------------------------------------------
>
> Key: AIRFLOW-4173
> URL: https://issues.apache.org/jira/browse/AIRFLOW-4173
> Project: Apache Airflow
> Issue Type: Improvement
> Components: scheduler
> Affects Versions: 1.10.2
> Reporter: Xiaodong DENG
> Assignee: Xiaodong DENG
> Priority: Critical
> Fix For: 1.10.3
>
>
> In current implementation of *SchedulerJob.process_file()* ([https://github.com/apache/airflow/blob/068ded96cd279dcd51f5b6d1e96f09205ecf40c8/airflow/jobs.py#L1722-L1734),] action '*dag = dagbag.get_dag(dag_id)*' is to be done no matter if dag_id is pointing to a paused DAG. However, the result will not be used later if that DAG is paused.
> This is causing inefficiency.
> We can do the `if DAG is paused` check first, before we invoke '*dag = dagbag.get_dag(dag_id)*'. This may bring considerable improvement.
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