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https://issues.apache.org/jira/browse/AIRFLOW-139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15565935#comment-15565935
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Daniel Zohar commented on AIRFLOW-139:
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[~sanand] I'm happy to do the coding bit if you can help setting up the tests.
Currently the tests are failing on Travis for an unknown reason (to me).
I'd be surprised if this presented problems as this should be a driver
(psycopg2) concern and not a developer concern
Let me know if you want to solve this together - shouldn't take too long
> Executing VACUUM with PostgresOperator
> --------------------------------------
>
> Key: AIRFLOW-139
> URL: https://issues.apache.org/jira/browse/AIRFLOW-139
> Project: Apache Airflow
> Issue Type: Bug
> Affects Versions: Airflow 1.7.0
> Reporter: Rafael
>
> Dear Airflow Maintainers,
> h1. Environment
> * Airflow version: *v1.7.0*
> * Airflow components: *PostgresOperator*
> * Python Version: *Python 3.5.1*
> * Operating System: *15.4.0 Darwin*
> h1. Description of Issue
> I am trying to execute a `VACUUM` command as part of DAG with the
> `PostgresOperator`, which fails with the following error:
> {quote}
> [2016-05-14 16:14:01,849] {__init__.py:36} INFO - Using executor
> SequentialExecutor
> Traceback (most recent call last):
> File "/usr/local/bin/airflow", line 15, in <module>
> args.func(args)
> File
> "/usr/local/Cellar/python3/3.5.1/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/airflow/bin/cli.py",
> line 203, in run
> pool=args.pool,
> File
> "/usr/local/Cellar/python3/3.5.1/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/airflow/models.py",
> line 1067, in run
> result = task_copy.execute(context=context)
> File
> "/usr/local/lib/python3.5/site-packages/airflow/operators/postgres_operator.py",
> line 39, in execute
> self.hook.run(self.sql, self.autocommit, parameters=self.parameters)
> File
> "/usr/local/Cellar/python3/3.5.1/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/airflow/hooks/dbapi_hook.py",
> line 109, in run
> cur.execute(s)
> psycopg2.InternalError: VACUUM cannot run inside a transaction block
> {quote}
> I could create a small python script that performs the operation, as
> explained in [this stackoverflow
> entry](http://stackoverflow.com/questions/1017463/postgresql-how-to-run-vacuum-from-code-outside-transaction-block).
> However, I would like to know first if the `VACUUM` command should be
> supported by the `PostgresOperator`.
> h1. Reproducing the Issue
> The operator can be declared as follows:
> {quote}
> conn = ('postgres_default')
> t4 = PostgresOperator(
> task_id='vacuum',
> postgres_conn_id=conn,
> sql=("VACUUM public.table"),
> dag=dag
> )
> {quote}
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