Randall Lin created AIRFLOW-2051:
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Summary: race condition during airflow setup
Key: AIRFLOW-2051
URL: https://issues.apache.org/jira/browse/AIRFLOW-2051
Project: Apache Airflow
Issue Type: Bug
Components: utils
Reporter: Randall Lin
os.makedirs calls should use exist_ok = True instead of checking for existence
nonatomically.
This conditional can result in a race condition of
# Process 1 checks for directory
# Process 2 checks for directory
# Process 1 successfully creates directory
# Process 2 fails when trying to create directory
using {{exist_ok}} will avoid this and be equivalent otherwise.
fixed in this PR
https://github.com/apache/incubator-airflow/pull/2970
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