[ https://issues.apache.org/jira/browse/AIRFLOW-1104?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16564331#comment-16564331 ]
ASF subversion and git services commented on AIRFLOW-1104: ---------------------------------------------------------- Commit ed972042a864cd010137190e0bbb1d25a9dcfe83 in incubator-airflow's branch refs/heads/master from Dan Fowler [ https://gitbox.apache.org/repos/asf?p=incubator-airflow.git;h=ed97204 ] [AIRFLOW-1104] Update jobs.py so Airflow does not over schedule tasks (#3568) This change will prevent tasks from getting scheduled and queued over the concurrency limits set for the dag > Concurrency check in scheduler should count queued tasks as well as running > --------------------------------------------------------------------------- > > Key: AIRFLOW-1104 > URL: https://issues.apache.org/jira/browse/AIRFLOW-1104 > Project: Apache Airflow > Issue Type: Bug > Environment: see https://github.com/apache/incubator-airflow/pull/2221 > "Tasks with the QUEUED state should also be counted below, but for now we > cannot count them. This is because there is no guarantee that queued tasks in > failed dagruns will or will not eventually run and queued tasks that will > never run will consume slots and can stall a DAG. Once we can guarantee that > all queued tasks in failed dagruns will never run (e.g. make sure that all > running/newly queued TIs have running dagruns), then we can include QUEUED > tasks here, with the constraint that they are in running dagruns." > Reporter: Alex Guziel > Priority: Minor > -- This message was sent by Atlassian JIRA (v7.6.3#76005)