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Posted to commits@airflow.apache.org by "Xiaodong DENG (JIRA)" <ji...@apache.org> on 2019/04/22 08:39:00 UTC
[jira] [Resolved] (AIRFLOW-4377) Optimise object conversion in
DAG.owner
[ https://issues.apache.org/jira/browse/AIRFLOW-4377?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Xiaodong DENG resolved AIRFLOW-4377.
------------------------------------
Resolution: Resolved
Assignee: Bas Harenslak
Fix Version/s: 1.10.4
> Optimise object conversion in DAG.owner
> ---------------------------------------
>
> Key: AIRFLOW-4377
> URL: https://issues.apache.org/jira/browse/AIRFLOW-4377
> Project: Apache Airflow
> Issue Type: Improvement
> Reporter: Bas Harenslak
> Assignee: Bas Harenslak
> Priority: Minor
> Fix For: 1.10.4
>
>
> Small optimisation possible in DAG.owner():
> Current implementation:
> {code}
> python -m timeit -n 1000000 '", ".join(list(set([i for i in ["test"]*100])))'
> 1000000 loops, best of 3: 4.47 usec per loop
> {code}
> The list & set conversion is not needed, so:
> {code}
> python -m timeit -n 1000000 '", ".join({i for i in ["test"]*100})'
> 1000000 loops, best of 3: 2.67 usec per loop
> {code}
> A +-40% speedup :)
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