Galak created AIRFLOW-2010:
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Summary: Make HttpHook inner connection pool configurable
Key: AIRFLOW-2010
URL: https://issues.apache.org/jira/browse/AIRFLOW-2010
Project: Apache Airflow
Issue Type: Improvement
Components: hooks
Affects Versions: 1.8.0
Reporter: Galak
HttpHook is using request module to perform http/https calls. but it is hidden
inside implementation. Therefore, it is not possible to choose any value for
_pool_connections_ or _pool_maxsize_ parameters, defaulting to 10. (see
[request module
documentation|http://docs.python-requests.org/en/latest/api/#lower-lower-level-classes])
_{{requests.adapters.HTTPAdapter}}_ parameters could probably be passed through
Connection extra parameters ?
As a consequence, calling a REST API concurrently (using
[ThreadPoolExecutor|https://docs.python.org/3/library/concurrent.futures.html#threadpoolexecutor])
is limited to 10 workers maximim. Each additional worker is stopped with the
following warning:
{quote}{{{connectionpool.py} WARNING - Connection pool is full, discarding
connection: my.api.example.org}}{quote}
See [this question on
stackoverflow|https://stackoverflow.com/questions/23632794/in-requests-library-how-can-i-avoid-httpconnectionpool-is-full-discarding-con]
about Http connexion pools configuration
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