xmariachi opened a new issue, #35474:
URL: https://github.com/apache/airflow/issues/35474
### Apache Airflow version
Other Airflow 2 version (please specify below)
### What happened
Version: 2.5.1
Run env: MWAA on AWS
Summary: Once every ~500-1000 runs approximately, the task hangs up
infinitely until manually killed, not allowing any other task to be placed for
this dag; and so its `execution_timeout` is not enforced.
In my experience, it only happens on tasks that consume from Kafka using
library `confluent_kafka`. The `execution_timeout` is enforced in other tasks.
Dag definition code:
```
# Dag Info
default_args = {
"retries": 3,
"on_failure_callback": on_failure_callback,
"sla": timedelta(hours=2),
"execution_timeout": timedelta(hours=4),
}
@dag(SERVICE_NAME,
default_args=default_args,
schedule_interval="*/5 * * * *",
start_date=pendulum.datetime(2023, 7, 3, 9, tz="UTC"),
catchup=True,
tags=['critical', 'dumper', 'kafka'],
max_active_runs=1)
def process_records():
ingest_from_kafka_and_save()
```
The `ingest_from_kafka_and_save()` contains code that consumes from Kafka,
providing a callback function to the consumption (which I suspect may have
something to do with the problem, since it happens asynchronously).
It's hard to reproduce since it is temperamental and happens every once in a
while.
Audit Log does not show anything special - just seems the hang indefinitely.
Consumption code itself works fine otherwise and it has been running for
months in this and other dags that use it - but they also show the same
behaviour.
### What you think should happen instead
The `execution_timeout` should be enforced and the task should be killed so
a new one could be placed.
### How to reproduce
It is hard to reproduce, since it happens very unfrequently.
* Create a dag with the definition in the "What happened" section
* Add a function with a basic kafka consumption from a Kafka topic that
consumes until end of topic partitions (or a max number of messages)
* Leave it running and wait for the problem to happen
### Operating System
MWAA on AWS
### Versions of Apache Airflow Providers
--constraint
"https://raw.githubusercontent.com/apache/airflow/constraints-2.5.1/constraints-3.10.txt";
apache-airflow-providers-amazon
apache-airflow-providers-snowflake==4.0.2
apache-airflow-providers-mysql==4.0.0
apache-airflow-providers-slack
confluent-kafka==2.1.0
### Deployment
Amazon (AWS) MWAA
### Deployment details
Medium sized cluster
2.5.1 version, latest update applied 2 weeks ago.
### Anything else
Unclear what triggers the error - but whatever the error, the task should be
killed to enforce the `execution_timeout`.
Seems like an internal thread management issue.
### Are you willing to submit PR?
- [X] Yes I am willing to submit a PR!
### Code of Conduct
- [X] I agree to follow this project's [Code of
Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)
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