[ https://issues.apache.org/jira/browse/AIRFLOW-2855?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Xiaodong DENG updated AIRFLOW-2855: ----------------------------------- Fix Version/s: 1.10.1 > Need to Check Validity of Cron Expression When Process DAG File/Zip File > ------------------------------------------------------------------------ > > Key: AIRFLOW-2855 > URL: https://issues.apache.org/jira/browse/AIRFLOW-2855 > Project: Apache Airflow > Issue Type: Improvement > Components: DAG > Reporter: Xiaodong DENG > Assignee: Xiaodong DENG > Priority: Critical > Fix For: 1.10.1 > > > *schedule_interval* of DAGs can either be *timedelta* or a *Cron expression*. > When it's a Cron expression, there is no mechanism to check its validity at > this moment. If there is anything wrong with the Cron expression itself, it > will cause issues when methods _*following_schedule(**)*_ and > _*previous_schedule()*_ are invoked (will affect scheduling). However, > exceptions will only be written into logs. From Web UI, it’s hard for users > to identify this issue & the source while no new task can be initiated > (especially for users who’re not very familiar with Cron). > It may be good to show error messages in web UI when a DAG's Cron expression > (as schedule_interval) can not be parsed by *croniter* properly. > -- This message was sent by Atlassian JIRA (v7.6.3#76005)