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https://issues.apache.org/jira/browse/AIRFLOW-4419?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16830613#comment-16830613
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ASF GitHub Bot commented on AIRFLOW-4419:
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ashb commented on pull request #5210: [AIRFLOW-4419] Restore used_slots and
queued_slots Pool methods
URL: https://github.com/apache/airflow/pull/5210
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> Concurrency calculation in scheduler is slow and has a bug
> ----------------------------------------------------------
>
> Key: AIRFLOW-4419
> URL: https://issues.apache.org/jira/browse/AIRFLOW-4419
> Project: Apache Airflow
> Issue Type: Improvement
> Reporter: Kevin Yang
> Assignee: Kevin Yang
> Priority: Minor
> Fix For: 2.0.0
>
>
> The pool, dag and task concurrency calculation logic is slow and can be
> optimized. Also current task concurrency should not increase if the executor
> already has the task.
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