zachliu opened a new issue #11663:
URL: https://github.com/apache/airflow/issues/11663
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**Apache Airflow version**: v1.10.12
**Kubernetes version (if you are using kubernetes)** (use `kubectl
version`): N/A
**Environment**:
- **Cloud provider or hardware configuration**: AWS
- **OS** (e.g. from /etc/os-release): Deployed in ECS Fargate
- **Install tools**: poetry
**What happened**:
I'm having this issue **randomly** (I've calculated the error rate to be
between 1~2% based on the # of ECS tasks running each day) where the
`aws_logs_hook` is unable the obtain existing log entries from Cloudwatch:
```
Traceback (most recent call last):
File
"/usr/local/lib/python3.8/site-packages/airflow/models/taskinstance.py", line
979, in _run_raw_task
result = task_copy.execute(context=context)
File
"/usr/local/lib/python3.8/site-packages/airflow/contrib/operators/ecs_operator.py",
line 152, in execute
self._check_success_task()
File
"/usr/local/lib/python3.8/site-packages/airflow/contrib/operators/ecs_operator.py",
line 175, in _check_success_task
for event in self.get_logs_hook().get_log_events(self.awslogs_group,
stream_name):
File
"/usr/local/lib/python3.8/site-packages/airflow/contrib/hooks/aws_logs_hook.py",
line 81, in get_log_events
response = self.get_conn().get_log_events(logGroupName=log_group,
File "/usr/local/lib/python3.8/site-packages/botocore/client.py", line
337, in _api_call
return self._make_api_call(operation_name, kwargs)
File "/usr/local/lib/python3.8/site-packages/botocore/client.py", line
656, in _make_api_call
raise error_class(parsed_response, operation_name)
botocore.errorfactory.ResourceNotFoundException: An error occurred
(ResourceNotFoundException) when calling the GetLogEvents operation: The
specified log stream does not exist.
```
The resource does exist when I check the cloudwatch UI.
Note: this is not the same issue as
https://github.com/apache/airflow/issues/9486 where the log stream name setup
is erroneous.
<!-- (please include exact error messages if you can) -->
**What you expected to happen**:
This could be a simple API glitch when using boto3 to get the log events. We
could add a retry mechanism
[here](https://github.com/apache/airflow/blob/6416d898060706787861ff8ecbc4363152a35f45/airflow/contrib/hooks/aws_logs_hook.py#L81).
<!-- What do you think went wrong? -->
**How to reproduce it**:
Running enough # of ECS task with ECS Operator
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**Anything else we need to know**:
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