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Ash Berlin-Taylor commented on AIRFLOW-3422: -------------------------------------------- Dang :( Does it work if a different timezone is used? What version of Pendulum and pytz do you have installed please? > Infinite loops during springtime DST transitions on python 3.6 > -------------------------------------------------------------- > > Key: AIRFLOW-3422 > URL: https://issues.apache.org/jira/browse/AIRFLOW-3422 > Project: Apache Airflow > Issue Type: Bug > Components: scheduler > Affects Versions: 1.10.1 > Reporter: Till Heistermann > Priority: Major > > Automatic DST transitions can cause dags to be stuck in an infinite loop, if > they happen to be scheduled in the "skipped" hour during a springtime DST > transition. > The fix introduced in https://issues.apache.org/jira/browse/AIRFLOW-3277 does > not seem to work for python 3.6, only for 3.5 and 2.7. > Example to reproduce (current master, python 3.6): > {code:java} > import pendulum > from datetime import datetime > from airflow.utils.timezone import make_aware > from airflow.models import DAG > nsw = pendulum.Timezone.load("Australia/Sydney") > dt = make_aware(datetime(2018, 10, 3, 2, 30), nsw) > dag = DAG("id", schedule_interval="30 2 * * *", start_date=dt) > dt = dag.following_schedule(dt); print(dt) > dt = dag.following_schedule(dt); print(dt) > dt = dag.following_schedule(dt); print(dt) > dt = dag.following_schedule(dt); print(dt) > dt = dag.following_schedule(dt); print(dt) > dt = dag.following_schedule(dt); print(dt) > dt = dag.following_schedule(dt); print(dt) > dt = dag.following_schedule(dt); print(dt) > dt = dag.following_schedule(dt); print(dt) > {code} > > -- This message was sent by Atlassian JIRA (v7.6.3#76005)