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From "Matthew Bowden (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AIRFLOW-2404) Message for why a DAG run has not been scheduled missing information
Date Tue, 01 May 2018 16:07:00 GMT
Matthew Bowden created AIRFLOW-2404:
---------------------------------------

             Summary: Message for why a DAG run has not been scheduled missing information
                 Key: AIRFLOW-2404
                 URL: https://issues.apache.org/jira/browse/AIRFLOW-2404
             Project: Apache Airflow
          Issue Type: Improvement
          Components: webserver
            Reporter: Matthew Bowden
            Assignee: Matthew Bowden


The webserver lists the following reasons for why a DAG run/task instance might not be started:
 * The scheduler is down or under heavy load
 * This task instance already ran and had its state changed manually (e.g. cleared in the
UI)

Another reason that the task might not have been started is because of the following:
 * The {{parallelism}} configuration value may be too low
 * The {{dag_concurrency}} configuration value may be too low
 * The {{max_active_dag_runs_per_dag}} configuration value may be too low
 * The {{non_pooled_task_slot_count}} configuration value may be too low



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