[ https://issues.apache.org/jira/browse/AIRFLOW-1077?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16172279#comment-16172279 ]
Pratik Khadloya commented on AIRFLOW-1077: ------------------------------------------ I think i am running into the same issue. Airflow says the subdags are running, but none of the steps within it are executing. When i restarted airflow, some progress happened, but then it got blocked again. > Subdags can deadlock > -------------------- > > Key: AIRFLOW-1077 > URL: https://issues.apache.org/jira/browse/AIRFLOW-1077 > Project: Apache Airflow > Issue Type: Bug > Reporter: Alex Guziel > > Given a concurrency of n, if all n running tasks are Subdags, the subdags > block any of their tasks from executing, leading to deadlock -- This message was sent by Atlassian JIRA (v6.4.14#64029)