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https://issues.apache.org/jira/browse/AIRFLOW-4419?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16830708#comment-16830708
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ASF subversion and git services commented on AIRFLOW-4419:
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Commit 1b620cae8e5b5922b03a2a60c7d89f3d3cdaac2e in airflow's branch
refs/heads/v1-10-stable from Ash Berlin-Taylor
[ https://gitbox.apache.org/repos/asf?p=airflow.git;h=1b620ca ]
[AIRFLOW-4419] Restore used_slots and queued_slots Pool methods (#5210)
These are still used in the UI and are helpful for observability of
Ariflow
(cherry picked from commit 8ffe08d1d0300385339d2be04b22ec273feb4845)
> 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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