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https://issues.apache.org/jira/browse/AIRFLOW-4591?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16873141#comment-16873141
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ASF subversion and git services commented on AIRFLOW-4591:
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Commit 003050a1a56b5ef5fcb82c359d1366624e5e7690 in airflow's branch
refs/heads/v1-10-test from Chao-Han Tsai
[ https://gitbox.apache.org/repos/asf?p=airflow.git;h=003050a ]
[AIRFLOW-4591] Make default_pool a real pool (#5349)
`non_pooled_task_slot_count` and `non_pooled_backfill_task_slot_count`
are removed in favor of a real pool, e.g. `default_pool`.
By default tasks are running in `default_pool`.
`default_pool` is initialized with 128 slots and user can change the
number of slots through UI/CLI. `default_pool` cannot be removed.
(cherry picked from commit 2c99ec624bd66e9fa38e9f0087d46ef4d7f05aec)
> Tag tasks with default pool
> ---------------------------
>
> Key: AIRFLOW-4591
> URL: https://issues.apache.org/jira/browse/AIRFLOW-4591
> Project: Apache Airflow
> Issue Type: New Feature
> Components: core
> Affects Versions: 2.0.0
> Reporter: Chao-Han Tsai
> Assignee: Chao-Han Tsai
> Priority: Major
> Fix For: 2.0.0
>
>
> Currently the number of running tasks without a pool specified will be
> limited by `non_pooled_task_slot_count`. It limits the number of tasks
> launched per scheduler loop but does not limit the number of tasks running in
> parallel.
> This ticket proposes that we assign tasks without a pool specified to default
> pool which limits the number of running tasks in parallel.
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