From 305f6a45f9691c42aff123bc0f5a334c114af0fa Mon Sep 17 00:00:00 2001
From: Jed Cunningham <jedcunningham@apache.org>
Date: Thu, 21 Aug 2025 14:23:13 -0600
Subject: [PATCH 1/3] Remove duplicate "concurrency" from dag details

"Concurrency" is the same as "Max Active Tasks", but is less clear what
it actually means, so I've removed it.
---
 airflow-core/src/airflow/ui/src/pages/Dag/Details.tsx | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/airflow-core/src/airflow/ui/src/pages/Dag/Details.tsx b/airflow-core/src/airflow/ui/src/pages/Dag/Details.tsx
index a618568ed4cf0..694792f4500c0 100644
--- a/airflow-core/src/airflow/ui/src/pages/Dag/Details.tsx
+++ b/airflow-core/src/airflow/ui/src/pages/Dag/Details.tsx
@@ -96,10 +96,6 @@ export const Details = () => {
                 <Time datetime={dag.last_expired} />
               </Table.Cell>
             </Table.Row>
-            <Table.Row>
-              <Table.Cell>{translate("dagDetails.concurrency")}</Table.Cell>
-              <Table.Cell>{dag.concurrency}</Table.Cell>
-            </Table.Row>
             <Table.Row>
               <Table.Cell>{translate("dagDetails.hasTaskConcurrencyLimits")}</Table.Cell>
               <Table.Cell>{dag.has_task_concurrency_limits.toString()}</Table.Cell>

From 2a0a2c171bd0088e457624c872ba9bb8a559d4ec Mon Sep 17 00:00:00 2001
From: Jed Cunningham <jedcunningham@apache.org>
Date: Fri, 22 Aug 2025 10:29:48 -0600
Subject: [PATCH 2/3] Remove `dagDetails.concurrency` translation.

---
 airflow-core/src/airflow/ui/public/i18n/locales/ar/common.json   | 1 -
 airflow-core/src/airflow/ui/public/i18n/locales/de/common.json   | 1 -
 airflow-core/src/airflow/ui/public/i18n/locales/en/common.json   | 1 -
 airflow-core/src/airflow/ui/public/i18n/locales/es/common.json   | 1 -
 airflow-core/src/airflow/ui/public/i18n/locales/fr/common.json   | 1 -
 airflow-core/src/airflow/ui/public/i18n/locales/he/common.json   | 1 -
 airflow-core/src/airflow/ui/public/i18n/locales/ko/common.json   | 1 -
 airflow-core/src/airflow/ui/public/i18n/locales/nl/common.json   | 1 -
 airflow-core/src/airflow/ui/public/i18n/locales/pl/common.json   | 1 -
 airflow-core/src/airflow/ui/public/i18n/locales/tr/common.json   | 1 -
 .../src/airflow/ui/public/i18n/locales/zh-TW/common.json         | 1 -
 11 files changed, 11 deletions(-)

diff --git a/airflow-core/src/airflow/ui/public/i18n/locales/ar/common.json b/airflow-core/src/airflow/ui/public/i18n/locales/ar/common.json
index 24ada7022f29a..a83ce12bfff3f 100644
--- a/airflow-core/src/airflow/ui/public/i18n/locales/ar/common.json
+++ b/airflow-core/src/airflow/ui/public/i18n/locales/ar/common.json
@@ -45,7 +45,6 @@
   "dag_zero": "لا يوجد أي Dag",
   "dagDetails": {
     "catchup": "إلحاق",
-    "concurrency": "تزامن",
     "dagRunTimeout": "مهلة تشغيل الDag",
     "defaultArgs": "متغيرات افتراضية",
     "description": "وصف",
diff --git a/airflow-core/src/airflow/ui/public/i18n/locales/de/common.json b/airflow-core/src/airflow/ui/public/i18n/locales/de/common.json
index 6545563843f93..d09c1edb7f89c 100644
--- a/airflow-core/src/airflow/ui/public/i18n/locales/de/common.json
+++ b/airflow-core/src/airflow/ui/public/i18n/locales/de/common.json
@@ -25,7 +25,6 @@
   "dag_other": "Dags",
   "dagDetails": {
     "catchup": "Nachgeholt",
-    "concurrency": "Parallelität",
     "dagRunTimeout": "Dag Lauf Zeitüberschreitung",
     "defaultArgs": "Standard-Parameter",
     "description": "Beschreibung",
diff --git a/airflow-core/src/airflow/ui/public/i18n/locales/en/common.json b/airflow-core/src/airflow/ui/public/i18n/locales/en/common.json
index 1e9e271b3c899..cd4c9eefdb205 100644
--- a/airflow-core/src/airflow/ui/public/i18n/locales/en/common.json
+++ b/airflow-core/src/airflow/ui/public/i18n/locales/en/common.json
@@ -25,7 +25,6 @@
   "dag_other": "Dags",
   "dagDetails": {
     "catchup": "Catchup",
-    "concurrency": "Concurrency",
     "dagRunTimeout": "Dag Run Timeout",
     "defaultArgs": "Default Args",
     "description": "Description",
diff --git a/airflow-core/src/airflow/ui/public/i18n/locales/es/common.json b/airflow-core/src/airflow/ui/public/i18n/locales/es/common.json
index b16dfc59b02e8..50c76e152bd0e 100644
--- a/airflow-core/src/airflow/ui/public/i18n/locales/es/common.json
+++ b/airflow-core/src/airflow/ui/public/i18n/locales/es/common.json
@@ -24,7 +24,6 @@
   "dag_other": "Dags",
   "dagDetails": {
     "catchup": "Catchup",
-    "concurrency": "Concurrencia",
     "dagRunTimeout": "Tiempo de Ejecución del Dag",
     "defaultArgs": "Argumentos por Defecto",
     "description": "Descripción",
diff --git a/airflow-core/src/airflow/ui/public/i18n/locales/fr/common.json b/airflow-core/src/airflow/ui/public/i18n/locales/fr/common.json
index 4da39f775cf4d..152ee3072391f 100644
--- a/airflow-core/src/airflow/ui/public/i18n/locales/fr/common.json
+++ b/airflow-core/src/airflow/ui/public/i18n/locales/fr/common.json
@@ -23,7 +23,6 @@
   "dag_other": "Dags",
   "dagDetails": {
     "catchup": "Rattrapage",
-    "concurrency": "Concurrence",
     "dagRunTimeout": "Délai d'exécution du Dag",
     "defaultArgs": "Arguments par défaut",
     "description": "Description",
diff --git a/airflow-core/src/airflow/ui/public/i18n/locales/he/common.json b/airflow-core/src/airflow/ui/public/i18n/locales/he/common.json
index 5e2499f70c7a5..1b7e99e6f301f 100644
--- a/airflow-core/src/airflow/ui/public/i18n/locales/he/common.json
+++ b/airflow-core/src/airflow/ui/public/i18n/locales/he/common.json
@@ -25,7 +25,6 @@
   "dag_other": "Dags",
   "dagDetails": {
     "catchup": "השלמה אוטומטית",
-    "concurrency": "מספר הרצות מקבילות",
     "dagRunTimeout": "זמן תפוגה להרצת Dag",
     "defaultArgs": "פרמטרי ברירת מחדל",
     "description": "תיאור",
diff --git a/airflow-core/src/airflow/ui/public/i18n/locales/ko/common.json b/airflow-core/src/airflow/ui/public/i18n/locales/ko/common.json
index a524a18d01883..89252f07ef452 100644
--- a/airflow-core/src/airflow/ui/public/i18n/locales/ko/common.json
+++ b/airflow-core/src/airflow/ui/public/i18n/locales/ko/common.json
@@ -25,7 +25,6 @@
   "dag_other": "Dags",
   "dagDetails": {
     "catchup": "캐치업",
-    "concurrency": "동시 샐행 수",
     "dagRunTimeout": "Dag 실행 제한 시간",
     "defaultArgs": "기본 인자",
     "description": "설명",
diff --git a/airflow-core/src/airflow/ui/public/i18n/locales/nl/common.json b/airflow-core/src/airflow/ui/public/i18n/locales/nl/common.json
index 91b03a3bb1fc6..2abfe91a84d4d 100644
--- a/airflow-core/src/airflow/ui/public/i18n/locales/nl/common.json
+++ b/airflow-core/src/airflow/ui/public/i18n/locales/nl/common.json
@@ -25,7 +25,6 @@
   "dag_other": "Dags",
   "dagDetails": {
     "catchup": "Catchup",
-    "concurrency": "Concurrency",
     "dagRunTimeout": "Dag Run timeout",
     "defaultArgs": "Standaard argumenten",
     "description": "Omschrijving",
diff --git a/airflow-core/src/airflow/ui/public/i18n/locales/pl/common.json b/airflow-core/src/airflow/ui/public/i18n/locales/pl/common.json
index 352df56d83a52..b2e1e7ea9f581 100644
--- a/airflow-core/src/airflow/ui/public/i18n/locales/pl/common.json
+++ b/airflow-core/src/airflow/ui/public/i18n/locales/pl/common.json
@@ -35,7 +35,6 @@
   "dag_other": "Dagi",
   "dagDetails": {
     "catchup": "Nadrabianie zaległości",
-    "concurrency": "Współbieżność",
     "dagRunTimeout": "Limit czasu wykonania",
     "defaultArgs": "Domyślne argumenty",
     "description": "Opis",
diff --git a/airflow-core/src/airflow/ui/public/i18n/locales/tr/common.json b/airflow-core/src/airflow/ui/public/i18n/locales/tr/common.json
index 42d2f847c2456..2ab6f3a53e11b 100644
--- a/airflow-core/src/airflow/ui/public/i18n/locales/tr/common.json
+++ b/airflow-core/src/airflow/ui/public/i18n/locales/tr/common.json
@@ -25,7 +25,6 @@
   "dag_other": "Dag'ler",
   "dagDetails": {
     "catchup": "Yakalama",
-    "concurrency": "Eş Zamanlılık",
     "dagRunTimeout": "Dag Çalıştırma Zaman Aşımı",
     "defaultArgs": "Varsayılan Argümanlar",
     "description": "Açıklama",
diff --git a/airflow-core/src/airflow/ui/public/i18n/locales/zh-TW/common.json b/airflow-core/src/airflow/ui/public/i18n/locales/zh-TW/common.json
index 04f3c39d653f2..fc49769790275 100644
--- a/airflow-core/src/airflow/ui/public/i18n/locales/zh-TW/common.json
+++ b/airflow-core/src/airflow/ui/public/i18n/locales/zh-TW/common.json
@@ -25,7 +25,6 @@
   "dag_other": "Dags",
   "dagDetails": {
     "catchup": "自動回填",
-    "concurrency": "並行數",
     "dagRunTimeout": "Dag 執行超時",
     "defaultArgs": "預設參數",
     "description": "描述",

From cdefd047c4fb047cd53c1a2b3c62a98158960ba8 Mon Sep 17 00:00:00 2001
From: Jed Cunningham <jedcunningham@apache.org>
Date: Fri, 22 Aug 2025 12:45:39 -0600
Subject: [PATCH 3/3] Deprecate the concurrency field in the api

---
 .../src/airflow/api_fastapi/core_api/datamodels/dags.py     | 6 +++++-
 .../api_fastapi/core_api/openapi/v2-rest-api-generated.yaml | 5 ++++-
 .../src/airflow/ui/openapi-gen/requests/schemas.gen.ts      | 4 +++-
 .../src/airflow/ui/openapi-gen/requests/types.gen.ts        | 2 ++
 airflow-ctl/src/airflowctl/api/datamodels/generated.py      | 6 +++++-
 5 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/airflow-core/src/airflow/api_fastapi/core_api/datamodels/dags.py b/airflow-core/src/airflow/api_fastapi/core_api/datamodels/dags.py
index 572b62b4818ce..0a5f34e8f25f1 100644
--- a/airflow-core/src/airflow/api_fastapi/core_api/datamodels/dags.py
+++ b/airflow-core/src/airflow/api_fastapi/core_api/datamodels/dags.py
@@ -186,7 +186,11 @@ def get_params(cls, params: abc.MutableMapping | None) -> dict | None:
     @computed_field  # type: ignore[prop-decorator]
     @property
     def concurrency(self) -> int:
-        """Return max_active_tasks as concurrency."""
+        """
+        Return max_active_tasks as concurrency.
+
+        Deprecated: Use max_active_tasks instead.
+        """
         return self.max_active_tasks
 
     # Mypy issue https://github.com/python/mypy/issues/1362
diff --git a/airflow-core/src/airflow/api_fastapi/core_api/openapi/v2-rest-api-generated.yaml b/airflow-core/src/airflow/api_fastapi/core_api/openapi/v2-rest-api-generated.yaml
index 8797232263e38..f3c373f3e7ea4 100644
--- a/airflow-core/src/airflow/api_fastapi/core_api/openapi/v2-rest-api-generated.yaml
+++ b/airflow-core/src/airflow/api_fastapi/core_api/openapi/v2-rest-api-generated.yaml
@@ -9156,7 +9156,10 @@ components:
         concurrency:
           type: integer
           title: Concurrency
-          description: Return max_active_tasks as concurrency.
+          description: 'Return max_active_tasks as concurrency.
+
+
+            Deprecated: Use max_active_tasks instead.'
           readOnly: true
         latest_dag_version:
           anyOf:
diff --git a/airflow-core/src/airflow/ui/openapi-gen/requests/schemas.gen.ts b/airflow-core/src/airflow/ui/openapi-gen/requests/schemas.gen.ts
index 204d2439c29fb..f9cbd88809bb2 100644
--- a/airflow-core/src/airflow/ui/openapi-gen/requests/schemas.gen.ts
+++ b/airflow-core/src/airflow/ui/openapi-gen/requests/schemas.gen.ts
@@ -1950,7 +1950,9 @@ export const $DAGDetailsResponse = {
         concurrency: {
             type: 'integer',
             title: 'Concurrency',
-            description: 'Return max_active_tasks as concurrency.',
+            description: `Return max_active_tasks as concurrency.
+
+Deprecated: Use max_active_tasks instead.`,
             readOnly: true
         },
         latest_dag_version: {
diff --git a/airflow-core/src/airflow/ui/openapi-gen/requests/types.gen.ts b/airflow-core/src/airflow/ui/openapi-gen/requests/types.gen.ts
index c425e586bb97e..012b93241070d 100644
--- a/airflow-core/src/airflow/ui/openapi-gen/requests/types.gen.ts
+++ b/airflow-core/src/airflow/ui/openapi-gen/requests/types.gen.ts
@@ -541,6 +541,8 @@ export type DAGDetailsResponse = {
     readonly file_token: string;
     /**
      * Return max_active_tasks as concurrency.
+     *
+     * Deprecated: Use max_active_tasks instead.
      */
     readonly concurrency: number;
     /**
diff --git a/airflow-ctl/src/airflowctl/api/datamodels/generated.py b/airflow-ctl/src/airflowctl/api/datamodels/generated.py
index 59ab81083d4eb..a143dddb5cd11 100644
--- a/airflow-ctl/src/airflowctl/api/datamodels/generated.py
+++ b/airflow-ctl/src/airflowctl/api/datamodels/generated.py
@@ -1252,7 +1252,11 @@ class DAGDetailsResponse(BaseModel):
     owner_links: Annotated[dict[str, str] | None, Field(title="Owner Links")] = None
     file_token: Annotated[str, Field(description="Return file token.", title="File Token")]
     concurrency: Annotated[
-        int, Field(description="Return max_active_tasks as concurrency.", title="Concurrency")
+        int,
+        Field(
+            description="Return max_active_tasks as concurrency.\n\nDeprecated: Use max_active_tasks instead.",
+            title="Concurrency",
+        ),
     ]
     latest_dag_version: Annotated[
         DagVersionResponse | None, Field(description="Return the latest DagVersion.")