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https://issues.apache.org/jira/browse/AIRFLOW-1504?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16127561#comment-16127561
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Trevor Edwards commented on AIRFLOW-1504:
-----------------------------------------
https://github.com/apache/incubator-airflow/pull/2517
> Log Cluster Name on Dataproc Operator When Executed
> ---------------------------------------------------
>
> Key: AIRFLOW-1504
> URL: https://issues.apache.org/jira/browse/AIRFLOW-1504
> Project: Apache Airflow
> Issue Type: Improvement
> Reporter: Trevor Edwards
> Assignee: Trevor Edwards
> Priority: Minor
> Attachments: dataproc_cluster_logging.py
>
>
> Since Jinja template substitution happens only just before execution of a
> task instance, it is not possible to inspect the cluster name populated for a
> Dataproc operator. This makes it hard to debug issues such as using ts_nodash
> as part of the clustername, as printing when the DAG is read would give the
> output:
> Cluster name: smoke-cluster-{{ ts_nodash }}
> then the operator would execute and the user receives the error:
> <HttpError 400 when requesting ... returned "clusterName must be a match of
> regex '(?:[a-z](?:[-a-z0-9]{0,49}[a-z0-9])?).'">
> but the user has no idea what cluster name was provided to the API.
> See attached example pipeline.
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