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[Bug] BrokenPipe: server socket closed error when we execute any dbt model in dbt core with redshift adapter

Aperta
#252 11 commenti 1 reazione 0 assegnatari Vedi su GitHub

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Valutazione

Difficoltà
4/5
Tempo stimato
3-5 giorni
Idoneità per principianti
25/100
Tipo di issue
Bug
Chiarezza
Da chiarire
Stato di attività
Ferma
Stack tecnologico
python
Ambito
databases

Direzione di ricerca

Non vengono indicati file del repository, test o punti di ingresso. Inizia riproducendo un’esecuzione multi-threaded di un modello dbt con il Redshift adapter e confronta il ciclo di vita della connessione intorno al periodo di inattività mostrato nei log; il lavoro è completato quando la causa dell’errore BrokenPipe è stata identificata e verificata.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Descrizione

We are facing an issue if we execute a dbt model in dbt core with redshift adapter in multi nodes or multi threads. We did some analysis to find the reason for a failure by checking the dbt logs and we found that at some random point one of the threads was going to idle state for a certain period of time and it was not executing any tasks sent to it and eventually it got failed with the below statement.
BrokenPipe: server socket closed. Please check that client side networking configurations such as Proxies, firewalls, VPN, etc. are not affecting your network connection.
We suspect this could be because of introduction of redshift_connector in dbt-redshift adapter by replacing psycopg2. We weren't facing any such issues in dbt older versions which used psycopg2.
Attaching the context from dbt log file

13:28:59.394786 [debug] [Thread-1 (]: Elementary: [dbt_tests] Artifacts changed.
.
. <LOT OF OTHER THREADS GO HERE USING ANOTHER CONNECTIONS>
.
13:53:01.835859 [debug] [Thread-1 (]: Elementary: Deleting from and inserting to: "elementary"."dbt_tests"
13:53:01.859812 [debug] [Thread-1 (]: Using redshift connection "model.elementary.dbt_tests"
13:53:01.860853 [debug] [Thread-1 (]: On model.elementary.dbt_tests: /* {"app": "dbt", "dbt_version": "1.8.9", "profile_name": "", "target_name": "", "node_id": "model.elementary.dbt_tests"} */
<SQL GOES HERE>
13:53:01.863164 [debug] [Thread-1 (]: Redshift adapter: Rolling back transaction.
13:53:01.864028 [debug] [Thread-1 (]: On model.elementary.dbt_tests: ROLLBACK
13:53:01.866800 [debug] [Thread-1 (]: Failed to rollback 'model.elementary.dbt_tests'
13:53:01.873315 [debug] [Thread-1 (]: On model.elementary.dbt_tests: Close
13:53:01.879586 [debug] [Thread-1 (]: Runtime Error in model dbt_tests (models/edr/dbt_artifacts/dbt_tests.sql)
BrokenPipe: server socket closed. Please check that client side networking configurations such as Proxies, firewalls, VPN, etc. are not affecting your network connection.
13:53:01.881652 [debug] [Thread-1 (]: Sending event: {'category': 'dbt', 'action': 'run_model', 'label': '382ae431-f242-4924-a625-8b4dd918ff58', 'context': [<snowplow_tracker.self_describing_json.SelfDescribingJson object at 0x7fb52f6a2a10>]}
13:53:01.882856 [error] [Thread-1 (]: 1 of 1 ERROR creating sql incremental model elementary.dbt_tests .......... [ERROR in 1646.81s]

As you can see last time when connection was used in Thread-1 was at 13:28:59.394786 (first line)
After almost 25mins dbt got back to this connection to sent the next statement but the connection was no longer open
There is no keep_alive option in redshift_connector - this is something we had specified in the old redshift adapter.

Lingua principale
Python
Stelle
220
Fork
86
Metriche di merge delle PR
Nessuna PR unita negli ultimi 30g

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