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Add on_kill equivalent to Databricks SQL Hook to cancel timed out queries #42668

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R7L208
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@R7L208 R7L208 commented Oct 2, 2024

The Databricks Provider did not implement a mechanism to cancel SQL queries submitted by DatabricksSqlHook. This led to data quality issues, where Airflow would report a cancellation due to timeout; however, the corresponding SQL query would continue to run on Databricks.

This PR uses threading to cancel SQL queries submitted by DatabricksSqlHook.run() once the timeout is exceeded.


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@R7L208 R7L208 force-pushed the lorin/databricks-sql-operator-on_kill-equivalent branch from 5a01d2a to 75f8c05 Compare October 2, 2024 17:36
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R7L208 commented Oct 4, 2024

@Lee-W - Could you help me understand why the new exceptions are not being found in airflow/exceptions.py for jobs:

  • Tests / Provider checks / Compat 2.8.4:P3.8 provider check (pull_request)
  • Tests / Provider checks / Compat 2.9.3:P3.8 provider check (pull_request)
  • Tests / Provider checks / Compat 2.10.1:P3.8 provider check (pull_request)

The exceptions are present in the file and are able to be successfully imported locally when I run breeze testing tests --test-type "Providers[databricks]", so I'm struggling to understand why they would cause an import error here, specifically from /usr/local/lib/python3.8/site-packages/airflow/exceptions.py.

__ ERROR collecting tests/providers/databricks/sensors/test_databricks_sql.py __
ImportError while importing test module '/opt/airflow/tests/providers/databricks/sensors/test_databricks_sql.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/local/lib/python3.8/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
tests/providers/databricks/sensors/test_databricks_sql.py:28: in <module>
    from airflow.providers.databricks.sensors.databricks_sql import DatabricksSqlSensor
/usr/local/lib/python3.8/site-packages/airflow/providers/databricks/sensors/databricks_sql.py:28: in <module>
    from airflow.providers.databricks.hooks.databricks_sql import DatabricksSqlHook
/usr/local/lib/python3.8/site-packages/airflow/providers/databricks/hooks/databricks_sql.py:41: in <module>
    from airflow.exceptions import (
E   ImportError: cannot import name 'AirflowTaskExecutionError' from 'airflow.exceptions' (/usr/local/lib/python3.8/site-packages/airflow/exceptions.py)
-- generated xml file: /files/test_result-providers_-amazon_google-sqlite.xml --

Also, the DB tests seem to be failing because of tests unrelated to my changes, or I'm missing how they are connected.

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Lee-W commented Oct 28, 2024

LGTM

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R7L208 commented Oct 31, 2024

hey @uranusjr - Can you please review as your requested changes should be addressed now? 🙏

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R7L208 commented Nov 6, 2024

Wanted to nudge on this again. @uranusjr - Is there any timeline for when you could re-review?

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