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https://issues.apache.org/jira/browse/AIRFLOW-1464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16848127#comment-16848127
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ASF GitHub Bot commented on AIRFLOW-1464:
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potiuk commented on pull request #5323: [AIRFLOW-1464] Batch update
task_instance state
URL: https://github.com/apache/airflow/pull/5323
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> Improve performance on getting dag run tis in backfill job
> ----------------------------------------------------------
>
> Key: AIRFLOW-1464
> URL: https://issues.apache.org/jira/browse/AIRFLOW-1464
> Project: Apache Airflow
> Issue Type: Improvement
> Components: backfill
> Reporter: Edgar Rodriguez
> Assignee: Chao-Han Tsai
> Priority: Major
>
> Improve the way task instances are retrieved, using batch query on TIs.
> The following code snippet needs to be improved:
> {code}
> for ti in dag_run.get_task_instances():
> # all tasks part of the backfill are scheduled to run
> if ti.state == State.NONE:
> ti.set_state(State.SCHEDULED, session=session)
> {code}
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