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Add duplicate hostname check for Celery workers - #58591

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jscheffl merged 2 commits into
apache:mainfrom
dheerajturaga:bugfix/celery-unique-worker-names
Nov 23, 2025
Merged

Add duplicate hostname check for Celery workers#58591
jscheffl merged 2 commits into
apache:mainfrom
dheerajturaga:bugfix/celery-unique-worker-names

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@dheerajturaga

@dheerajturagadheerajturaga commented Nov 23, 2025

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Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.

This prevents confusion and potential conflicts from having multiple
workers with identical hostnames

@dheerajturaga
Add duplicate hostname check for Celery workers
9ac6f14
 Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
@dheerajturaga

dheerajturaga commented Nov 23, 2025

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cc: @jscheffl this PR is to be consistent with #58586

@jscheffl
jscheffl merged commit 16829d7 into apache:mainNov 23, 2025
79 checks passed
@potiuk

potiuk commented Nov 23, 2025

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Nice!

This was referenced Nov 27, 2025
Closed
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CopilotAI pushed a commit to jason810496/airflow that referenced this pull request Dec 5, 2025
@dheerajturaga
Add duplicate hostname check for Celery workers (apache#58591)
6c8fc96
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
itayweb pushed a commit to itayweb/airflow that referenced this pull request Dec 6, 2025
@dheerajturaga@itayweb
Add duplicate hostname check for Celery workers (apache#58591)
f3f1897
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
@michaelosthegemichaelosthege mentioned this pull request Jan 29, 2026
Merged
Subham-KRLX pushed a commit to Subham-KRLX/airflow that referenced this pull request Mar 4, 2026
@dheerajturaga@Subham-KRLX
Add duplicate hostname check for Celery workers (apache#58591)
9bad878
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
shivaam added a commit to shivaam/airflow that referenced this pull request Mar 21, 2026
@shivaam
Fix Celery worker stuck tasks by resetting producer pool after inspect
ecd0e7a
The duplicate hostname check (added in apache#58591) calls
celery_app.control.inspect().active_queues() which lazily initializes
celery_app.amqp._producer_pool. When worker_main() subsequently forks
prefork pool workers, children inherit this stale producer pool with
the parent's Redis connection, breaking consumer-to-pool task dispatch.
Reset _producer_pool to None after the inspect block so worker_main()
initializes it fresh in the correct process context after forking.
closes: apache#59707
@shivaamshivaam mentioned this pull request Mar 23, 2026
Closed
2 tasks
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@dheerajturaga@potiuk@jscheffl
, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
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Add duplicate hostname check for Celery workers by dheerajturaga · Pull Request #58591 · apache/airflow · GitHub
Skip to content
Add duplicate hostname check for Celery workers - #58591
Merged
jscheffl merged 2 commits into
apache:mainfrom 
dheerajturaga:bugfix/celery-unique-worker-names
Nov 23, 2025
Merged
Add duplicate hostname check for Celery workers#58591
jscheffl merged 2 commits into
apache:mainfrom 
dheerajturaga:bugfix/celery-unique-worker-names
Conversation
@dheerajturaga
@dheerajturagadheerajturaga
commented
Nov 23, 2025

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Prevent launching a new Celery worker if another worker with the same

hostname is already running. The check queries active workers via the

Celery inspect API and raises an error if a worker with the specified

hostname already exists.
This prevents confusion and potential conflicts from having multiple

workers with identical hostnames
@dheerajturaga
Add duplicate hostname check for Celery workers
9ac6f14
 Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
@dheerajturaga
dheerajturaga
commented
Nov 23, 2025

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MemberAuthor
cc: @jscheffl this PR is to be consistent with #58586
@jscheffl
jscheffl
merged commit 16829d7
into
apache:mainNov 23, 2025

79 checks passed

@potiuk
potiuk
commented
Nov 23, 2025

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Nice!

This was referenced Nov 27, 2025

Closed


Closed

CopilotAI
pushed a commit
to jason810496/airflow
that referenced
this pull request
Dec 5, 2025
@dheerajturaga
Add duplicate hostname check for Celery workers (apache#58591)
6c8fc96
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
itayweb pushed a commit
to itayweb/airflow
that referenced
this pull request
Dec 6, 2025
@dheerajturaga@itayweb
Add duplicate hostname check for Celery workers (apache#58591)
f3f1897
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
@michaelosthegemichaelosthege
mentioned this pull request
Jan 29, 2026
 Merged

Subham-KRLX pushed a commit
to Subham-KRLX/airflow
that referenced
this pull request
Mar 4, 2026
@dheerajturaga@Subham-KRLX
Add duplicate hostname check for Celery workers (apache#58591)
9bad878
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
shivaam added a commit
to shivaam/airflow
that referenced
this pull request
Mar 21, 2026
@shivaam
Fix Celery worker stuck tasks by resetting producer pool after inspect
ecd0e7a
The duplicate hostname check (added in apache#58591) calls
celery_app.control.inspect().active_queues() which lazily initializes
celery_app.amqp._producer_pool. When worker_main() subsequently forks
prefork pool workers, children inherit this stale producer pool with
the parent's Redis connection, breaking consumer-to-pool task dispatch.
Reset _producer_pool to None after the inspect block so worker_main()
initializes it fresh in the correct process context after forking.
closes: apache#59707
@shivaamshivaam
mentioned this pull request
Mar 23, 2026

Closed

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, 'i');
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Add duplicate hostname check for Celery workers by dheerajturaga · Pull Request #58591 · apache/airflow · GitHub
Skip to content
Add duplicate hostname check for Celery workers - #58591
Merged
jscheffl merged 2 commits into
apache:mainfrom 
dheerajturaga:bugfix/celery-unique-worker-names
Nov 23, 2025
Merged
Add duplicate hostname check for Celery workers#58591
jscheffl merged 2 commits into
apache:mainfrom 
dheerajturaga:bugfix/celery-unique-worker-names
Conversation
@dheerajturaga
@dheerajturagadheerajturaga
commented
Nov 23, 2025

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Member
Prevent launching a new Celery worker if another worker with the same

hostname is already running. The check queries active workers via the

Celery inspect API and raises an error if a worker with the specified

hostname already exists.
This prevents confusion and potential conflicts from having multiple

workers with identical hostnames
@dheerajturaga
Add duplicate hostname check for Celery workers
9ac6f14
 Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
@dheerajturaga
dheerajturaga
commented
Nov 23, 2025

Copy link


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MemberAuthor
cc: @jscheffl this PR is to be consistent with #58586
@jscheffl
jscheffl
merged commit 16829d7
into
apache:mainNov 23, 2025

79 checks passed

@potiuk
potiuk
commented
Nov 23, 2025

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Nice!

This was referenced Nov 27, 2025

Closed


Closed

CopilotAI
pushed a commit
to jason810496/airflow
that referenced
this pull request
Dec 5, 2025
@dheerajturaga
Add duplicate hostname check for Celery workers (apache#58591)
6c8fc96
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
itayweb pushed a commit
to itayweb/airflow
that referenced
this pull request
Dec 6, 2025
@dheerajturaga@itayweb
Add duplicate hostname check for Celery workers (apache#58591)
f3f1897
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
@michaelosthegemichaelosthege
mentioned this pull request
Jan 29, 2026
 Merged

Subham-KRLX pushed a commit
to Subham-KRLX/airflow
that referenced
this pull request
Mar 4, 2026
@dheerajturaga@Subham-KRLX
Add duplicate hostname check for Celery workers (apache#58591)
9bad878
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
shivaam added a commit
to shivaam/airflow
that referenced
this pull request
Mar 21, 2026
@shivaam
Fix Celery worker stuck tasks by resetting producer pool after inspect
ecd0e7a
The duplicate hostname check (added in apache#58591) calls
celery_app.control.inspect().active_queues() which lazily initializes
celery_app.amqp._producer_pool. When worker_main() subsequently forks
prefork pool workers, children inherit this stale producer pool with
the parent's Redis connection, breaking consumer-to-pool task dispatch.
Reset _producer_pool to None after the inspect block so worker_main()
initializes it fresh in the correct process context after forking.
closes: apache#59707
@shivaamshivaam
mentioned this pull request
Mar 23, 2026

Closed

2 tasks
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@dheerajturaga@potiuk@jscheffl

, 'i');
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// Highlight search terms from Google/DuckDuckGo/Bing referrer
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Add duplicate hostname check for Celery workers by dheerajturaga · Pull Request #58591 · apache/airflow · GitHub
Skip to content
Add duplicate hostname check for Celery workers - #58591
Merged
jscheffl merged 2 commits into
apache:mainfrom 
dheerajturaga:bugfix/celery-unique-worker-names
Nov 23, 2025
Merged
Add duplicate hostname check for Celery workers#58591
jscheffl merged 2 commits into
apache:mainfrom 
dheerajturaga:bugfix/celery-unique-worker-names
Conversation
@dheerajturaga
@dheerajturagadheerajturaga
commented
Nov 23, 2025

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Prevent launching a new Celery worker if another worker with the same

hostname is already running. The check queries active workers via the

Celery inspect API and raises an error if a worker with the specified

hostname already exists.
This prevents confusion and potential conflicts from having multiple

workers with identical hostnames
@dheerajturaga
Add duplicate hostname check for Celery workers
9ac6f14
 Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
@dheerajturaga
dheerajturaga
commented
Nov 23, 2025

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MemberAuthor
cc: @jscheffl this PR is to be consistent with #58586
@jscheffl
jscheffl
merged commit 16829d7
into
apache:mainNov 23, 2025

79 checks passed

@potiuk
potiuk
commented
Nov 23, 2025

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Nice!

This was referenced Nov 27, 2025

Closed


Closed

CopilotAI
pushed a commit
to jason810496/airflow
that referenced
this pull request
Dec 5, 2025
@dheerajturaga
Add duplicate hostname check for Celery workers (apache#58591)
6c8fc96
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
itayweb pushed a commit
to itayweb/airflow
that referenced
this pull request
Dec 6, 2025
@dheerajturaga@itayweb
Add duplicate hostname check for Celery workers (apache#58591)
f3f1897
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
@michaelosthegemichaelosthege
mentioned this pull request
Jan 29, 2026
 Merged

Subham-KRLX pushed a commit
to Subham-KRLX/airflow
that referenced
this pull request
Mar 4, 2026
@dheerajturaga@Subham-KRLX
Add duplicate hostname check for Celery workers (apache#58591)
9bad878
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
shivaam added a commit
to shivaam/airflow
that referenced
this pull request
Mar 21, 2026
@shivaam
Fix Celery worker stuck tasks by resetting producer pool after inspect
ecd0e7a
The duplicate hostname check (added in apache#58591) calls
celery_app.control.inspect().active_queues() which lazily initializes
celery_app.amqp._producer_pool. When worker_main() subsequently forks
prefork pool workers, children inherit this stale producer pool with
the parent's Redis connection, breaking consumer-to-pool task dispatch.
Reset _producer_pool to None after the inspect block so worker_main()
initializes it fresh in the correct process context after forking.
closes: apache#59707
@shivaamshivaam
mentioned this pull request
Mar 23, 2026

Closed

2 tasks
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@dheerajturaga@potiuk@jscheffl

, 'i');
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var __re = new RegExp('^' + "youtube\\.com" + '
Add duplicate hostname check for Celery workers by dheerajturaga · Pull Request #58591 · apache/airflow · GitHub
Skip to content
Add duplicate hostname check for Celery workers - #58591
Merged
jscheffl merged 2 commits into
apache:mainfrom 
dheerajturaga:bugfix/celery-unique-worker-names
Nov 23, 2025
Merged
Add duplicate hostname check for Celery workers#58591
jscheffl merged 2 commits into
apache:mainfrom 
dheerajturaga:bugfix/celery-unique-worker-names
Conversation
@dheerajturaga
@dheerajturagadheerajturaga
commented
Nov 23, 2025

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Prevent launching a new Celery worker if another worker with the same

hostname is already running. The check queries active workers via the

Celery inspect API and raises an error if a worker with the specified

hostname already exists.
This prevents confusion and potential conflicts from having multiple

workers with identical hostnames
@dheerajturaga
Add duplicate hostname check for Celery workers
9ac6f14
 Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
@dheerajturaga
dheerajturaga
commented
Nov 23, 2025

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MemberAuthor
cc: @jscheffl this PR is to be consistent with #58586
@jscheffl
jscheffl
merged commit 16829d7
into
apache:mainNov 23, 2025

79 checks passed

@potiuk
potiuk
commented
Nov 23, 2025

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@dheerajturaga
Add duplicate hostname check for Celery workers (apache#58591)
6c8fc96
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
itayweb pushed a commit
to itayweb/airflow
that referenced
this pull request
Dec 6, 2025
@dheerajturaga@itayweb
Add duplicate hostname check for Celery workers (apache#58591)
f3f1897
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
@michaelosthegemichaelosthege
mentioned this pull request
Jan 29, 2026
 Merged

Subham-KRLX pushed a commit
to Subham-KRLX/airflow
that referenced
this pull request
Mar 4, 2026
@dheerajturaga@Subham-KRLX
Add duplicate hostname check for Celery workers (apache#58591)
9bad878
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
shivaam added a commit
to shivaam/airflow
that referenced
this pull request
Mar 21, 2026
@shivaam
Fix Celery worker stuck tasks by resetting producer pool after inspect
ecd0e7a
The duplicate hostname check (added in apache#58591) calls
celery_app.control.inspect().active_queues() which lazily initializes
celery_app.amqp._producer_pool. When worker_main() subsequently forks
prefork pool workers, children inherit this stale producer pool with
the parent's Redis connection, breaking consumer-to-pool task dispatch.
Reset _producer_pool to None after the inspect block so worker_main()
initializes it fresh in the correct process context after forking.
closes: apache#59707
@shivaamshivaam
mentioned this pull request
Mar 23, 2026

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, 'i');
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// Auto-enable theater mode on YouTube
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function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
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try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Add duplicate hostname check for Celery workers by dheerajturaga · Pull Request #58591 · apache/airflow · GitHub
Skip to content
Add duplicate hostname check for Celery workers - #58591
Merged
jscheffl merged 2 commits into
apache:mainfrom 
dheerajturaga:bugfix/celery-unique-worker-names
Nov 23, 2025
Merged
Add duplicate hostname check for Celery workers#58591
jscheffl merged 2 commits into
apache:mainfrom 
dheerajturaga:bugfix/celery-unique-worker-names
Conversation
@dheerajturaga
@dheerajturagadheerajturaga
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Prevent launching a new Celery worker if another worker with the same

hostname is already running. The check queries active workers via the

Celery inspect API and raises an error if a worker with the specified

hostname already exists.
This prevents confusion and potential conflicts from having multiple

workers with identical hostnames
@dheerajturaga
Add duplicate hostname check for Celery workers
9ac6f14
 Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
@dheerajturaga
dheerajturaga
commented
Nov 23, 2025

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cc: @jscheffl this PR is to be consistent with #58586
@jscheffl
jscheffl
merged commit 16829d7
into
apache:mainNov 23, 2025

79 checks passed

@potiuk
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Nice!

This was referenced Nov 27, 2025

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CopilotAI
pushed a commit
to jason810496/airflow
that referenced
this pull request
Dec 5, 2025
@dheerajturaga
Add duplicate hostname check for Celery workers (apache#58591)
6c8fc96
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
itayweb pushed a commit
to itayweb/airflow
that referenced
this pull request
Dec 6, 2025
@dheerajturaga@itayweb
Add duplicate hostname check for Celery workers (apache#58591)
f3f1897
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
@michaelosthegemichaelosthege
mentioned this pull request
Jan 29, 2026
 Merged

Subham-KRLX pushed a commit
to Subham-KRLX/airflow
that referenced
this pull request
Mar 4, 2026
@dheerajturaga@Subham-KRLX
Add duplicate hostname check for Celery workers (apache#58591)
9bad878
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
shivaam added a commit
to shivaam/airflow
that referenced
this pull request
Mar 21, 2026
@shivaam
Fix Celery worker stuck tasks by resetting producer pool after inspect
ecd0e7a
The duplicate hostname check (added in apache#58591) calls
celery_app.control.inspect().active_queues() which lazily initializes
celery_app.amqp._producer_pool. When worker_main() subsequently forks
prefork pool workers, children inherit this stale producer pool with
the parent's Redis connection, breaking consumer-to-pool task dispatch.
Reset _producer_pool to None after the inspect block so worker_main()
initializes it fresh in the correct process context after forking.
closes: apache#59707
@shivaamshivaam
mentioned this pull request
Mar 23, 2026

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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
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} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
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(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Add duplicate hostname check for Celery workers by dheerajturaga · Pull Request #58591 · apache/airflow · GitHub
Skip to content
Add duplicate hostname check for Celery workers - #58591
Merged
jscheffl merged 2 commits into
apache:mainfrom 
dheerajturaga:bugfix/celery-unique-worker-names
Nov 23, 2025
Merged
Add duplicate hostname check for Celery workers#58591
jscheffl merged 2 commits into
apache:mainfrom 
dheerajturaga:bugfix/celery-unique-worker-names
Conversation
@dheerajturaga
@dheerajturagadheerajturaga
commented
Nov 23, 2025

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Prevent launching a new Celery worker if another worker with the same

hostname is already running. The check queries active workers via the

Celery inspect API and raises an error if a worker with the specified

hostname already exists.
This prevents confusion and potential conflicts from having multiple

workers with identical hostnames
@dheerajturaga
Add duplicate hostname check for Celery workers
9ac6f14
 Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
@dheerajturaga
dheerajturaga
commented
Nov 23, 2025

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MemberAuthor
cc: @jscheffl this PR is to be consistent with #58586
@jscheffl
jscheffl
merged commit 16829d7
into
apache:mainNov 23, 2025

79 checks passed

@potiuk
potiuk
commented
Nov 23, 2025

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Nice!

This was referenced Nov 27, 2025

Closed


Closed

CopilotAI
pushed a commit
to jason810496/airflow
that referenced
this pull request
Dec 5, 2025
@dheerajturaga
Add duplicate hostname check for Celery workers (apache#58591)
6c8fc96
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
itayweb pushed a commit
to itayweb/airflow
that referenced
this pull request
Dec 6, 2025
@dheerajturaga@itayweb
Add duplicate hostname check for Celery workers (apache#58591)
f3f1897
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
@michaelosthegemichaelosthege
mentioned this pull request
Jan 29, 2026
 Merged

Subham-KRLX pushed a commit
to Subham-KRLX/airflow
that referenced
this pull request
Mar 4, 2026
@dheerajturaga@Subham-KRLX
Add duplicate hostname check for Celery workers (apache#58591)
9bad878
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
shivaam added a commit
to shivaam/airflow
that referenced
this pull request
Mar 21, 2026
@shivaam
Fix Celery worker stuck tasks by resetting producer pool after inspect
ecd0e7a
The duplicate hostname check (added in apache#58591) calls
celery_app.control.inspect().active_queues() which lazily initializes
celery_app.amqp._producer_pool. When worker_main() subsequently forks
prefork pool workers, children inherit this stale producer pool with
the parent's Redis connection, breaking consumer-to-pool task dispatch.
Reset _producer_pool to None after the inspect block so worker_main()
initializes it fresh in the correct process context after forking.
closes: apache#59707
@shivaamshivaam
mentioned this pull request
Mar 23, 2026

Closed

2 tasks
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
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Add duplicate hostname check for Celery workers by dheerajturaga · Pull Request #58591 · apache/airflow · GitHub
Skip to content
Add duplicate hostname check for Celery workers - #58591
Merged
jscheffl merged 2 commits into
apache:mainfrom 
dheerajturaga:bugfix/celery-unique-worker-names
Nov 23, 2025
Merged
Add duplicate hostname check for Celery workers#58591
jscheffl merged 2 commits into
apache:mainfrom 
dheerajturaga:bugfix/celery-unique-worker-names
Conversation
@dheerajturaga
@dheerajturagadheerajturaga
commented
Nov 23, 2025

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Prevent launching a new Celery worker if another worker with the same

hostname is already running. The check queries active workers via the

Celery inspect API and raises an error if a worker with the specified

hostname already exists.
This prevents confusion and potential conflicts from having multiple

workers with identical hostnames
@dheerajturaga
Add duplicate hostname check for Celery workers
9ac6f14
 Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
@dheerajturaga
dheerajturaga
commented
Nov 23, 2025

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MemberAuthor
cc: @jscheffl this PR is to be consistent with #58586
@jscheffl
jscheffl
merged commit 16829d7
into
apache:mainNov 23, 2025

79 checks passed

@potiuk
potiuk
commented
Nov 23, 2025

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Nice!

This was referenced Nov 27, 2025

Closed


Closed

CopilotAI
pushed a commit
to jason810496/airflow
that referenced
this pull request
Dec 5, 2025
@dheerajturaga
Add duplicate hostname check for Celery workers (apache#58591)
6c8fc96
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
itayweb pushed a commit
to itayweb/airflow
that referenced
this pull request
Dec 6, 2025
@dheerajturaga@itayweb
Add duplicate hostname check for Celery workers (apache#58591)
f3f1897
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
@michaelosthegemichaelosthege
mentioned this pull request
Jan 29, 2026
 Merged

Subham-KRLX pushed a commit
to Subham-KRLX/airflow
that referenced
this pull request
Mar 4, 2026
@dheerajturaga@Subham-KRLX
Add duplicate hostname check for Celery workers (apache#58591)
9bad878
* Add duplicate hostname check for Celery workers
Prevent launching a new Celery worker if another worker with the same
hostname is already running. The check queries active workers via the
Celery inspect API and raises an error if a worker with the specified
hostname already exists.
This prevents confusion and potential conflicts from having multiple
workers with identical hostnames
* Fix tests
shivaam added a commit
to shivaam/airflow
that referenced
this pull request
Mar 21, 2026
@shivaam
Fix Celery worker stuck tasks by resetting producer pool after inspect
ecd0e7a
The duplicate hostname check (added in apache#58591) calls
celery_app.control.inspect().active_queues() which lazily initializes
celery_app.amqp._producer_pool. When worker_main() subsequently forks
prefork pool workers, children inherit this stale producer pool with
the parent's Redis connection, breaking consumer-to-pool task dispatch.
Reset _producer_pool to None after the inspect block so worker_main()
initializes it fresh in the correct process context after forking.
closes: apache#59707
@shivaamshivaam
mentioned this pull request
Mar 23, 2026

Closed

2 tasks
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@jscheffljscheffljscheffl approved these changes
@hussein-awalahussein-awalaAwaiting requested review from hussein-awalahussein-awala is a code owner

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