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adwk67 merged 1 commit into from
Jan 22, 2026
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docs: Add troubleshooting note re. parsing race condition #738

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16 changes: 16 additions & 0 deletions docs/modules/airflow/pages/troubleshooting/index.adoc
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Expand Up @@ -145,3 +145,19 @@ When a custom DAG folder (e.g. `/dags`) is defined with `envOverrides` and some
----

NOTE: Generally speaking it is https://airflow.apache.org/docs/apache-airflow/stable/configurations-ref.html#configuration-reference[recommended] by Airflow to have the same config everywhere across all components.

== GitSync race condition

Sometimes a race condition can arise when the long-running Python process started by the Airflow dag-processor caches python submodules before the gitsync fetch is complete. This is indeterminate but can be avoided by adding the following lines to the top of each DAG file that references submodules:

[source,python]
----
import importlib
import site

# invalidate cache due to race condition when using dag-processor
importlib.reload(site)
importlib.invalidate_caches()
----

This will add some overhead that should be minimal in comparison to parsing the DAG as a whole.
10 changes: 10 additions & 0 deletions tests/templates/kuttl/mount-dags-gitsync/30-install-airflow-cluster.yaml.j2
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Expand Up @@ -144,3 +144,13 @@ spec:
envOverrides:
AIRFLOW_CONN_KUBERNETES_IN_CLUSTER: "kubernetes://?__extra__=%7B%22extra__kubernetes__in_cluster%22%3A+true%2C+%22extra__kubernetes__kube_config%22%3A+%22%22%2C+%22extra__kubernetes__kube_config_path%22%3A+%22%22%2C+%22extra__kubernetes__namespace%22%3A+%22%22%7D"
replicas: 1
dagProcessors:
config:
gracefulShutdownTimeout: 10s
logging:
enableVectorAgent: {{ lookup('env', 'VECTOR_AGGREGATOR') | length > 0 }}
roleGroups:
default:
envOverrides:
AIRFLOW_CONN_KUBERNETES_IN_CLUSTER: "kubernetes://?__extra__=%7B%22extra__kubernetes__in_cluster%22%3A+true%2C+%22extra__kubernetes__kube_config%22%3A+%22%22%2C+%22extra__kubernetes__kube_config_path%22%3A+%22%22%2C+%22extra__kubernetes__namespace%22%3A+%22%22%7D"
replicas: 1
9 changes: 9 additions & 0 deletions tests/templates/kuttl/versioning/30-install-airflow-cluster.yaml.j2
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Expand Up @@ -79,3 +79,12 @@ spec:
default:
envOverrides: *envOverrides
replicas: 1
dagProcessors:
config:
gracefulShutdownTimeout: 10s
logging:
enableVectorAgent: {{ lookup('env', 'VECTOR_AGGREGATOR') | length > 0 }}
roleGroups:
default:
envOverrides: *envOverrides
replicas: 1