[ https://issues.apache.org/jira/browse/AIRFLOW-3902?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Kiran Pathak closed AIRFLOW-3902. --------------------------------- > Singleton operator to skip downstream tasks > ------------------------------------------- > > Key: AIRFLOW-3902 > URL: https://issues.apache.org/jira/browse/AIRFLOW-3902 > Project: Apache Airflow > Issue Type: New Feature > Components: operators > Reporter: Kiran Pathak > Assignee: Kiran Pathak > Priority: Major > Labels: operator, singleton > Attachments: image-2019-02-18-05-03-00-290.png, > image-2019-02-18-05-03-58-662.png > > > This operator will: > * check for downstream tasks from previous DagRuns in *_unfinished_* state > * skip downstream tasks from execution if it finds a downstream task in > running state from previous DagRuns > This feature ensures downstream children of this operator only one instance > is scheduled to run. It avoids unnecessary processing / scheduling if it does > not need to. > !image-2019-02-18-05-03-00-290.png|width=213,height=102! > !image-2019-02-18-05-03-58-662.png|width=224,height=88! > -- This message was sent by Atlassian JIRA (v7.6.3#76005)