dailingling opened a new issue #11711: URL: https://github.com/apache/airflow/issues/11711
**Apache Airflow version**: 1.10.12 **Kubernetes version (if you are using kubernetes)** (use `kubectl version`): no **Environment**: - **Cloud provider or hardware configuration**: - **OS** (e.g. from /etc/os-release): centos 7 - **Kernel** (e.g. `uname -a`):3.10.0-862.el7.x86_64 - **Install tools**: python3 install airflow - **Others**: **What happened**: OSError: [Errno 12] Cannot allocate memory Traceback (most recent call last): File "/data//.local/bin/airflow", line 37, in <module> args.func(args) File "/data//.local/lib/python3.7/site-packages/airflow/utils/cli.py", line 76, in wrapper return f(*args, **kwargs) File "/data//.local/lib/python3.7/site-packages/airflow/bin/cli.py", line 579, in run _run(args, dag, ti) File "/data//.local/lib/python3.7/site-packages/airflow/bin/cli.py", line 475, in _run run_job.run() File "/data//.local/lib/python3.7/site-packages/airflow/jobs/base_job.py", line 218, in run self._execute() File "/data//.local/lib/python3.7/site-packages/airflow/jobs/local_task_job.py", line 94, in _execute self.task_runner.start() File "/data//.local/lib/python3.7/site-packages/airflow/task/task_runner/standard_task_runner.py", line 43, in start self.process = self._start_by_fork() File "/data//.local/lib/python3.7/site-packages/airflow/task/task_runner/standard_task_runner.py", line 52, in _start_by_fork pid = os.fork() OSError: [Errno 12] Cannot allocate memory **What you expected to happen**: It may don't have enough swap.so I try to fix like this page:https://www.digitalocean.com/community/tutorials/how-to-add-swap-on-centos-7 add swap to 4g; but it don't work . this issue always appear . ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org