From 65e08646dec81a9c5a10c6841be1d35e597cab1a Mon Sep 17 00:00:00 2001
From: vtino17 <vsvalentinosaputra.98@gmail.com>
Date: Wed, 22 Jul 2026 16:10:56 +0700
Subject: [PATCH] Apply Dag processor-specific labels to its Deployment
 metadata

The metadata.labels section of the dag-processor Deployment now
includes dagProcessor.labels (merged with global .Values.labels),
matching the pattern used by other components.

closes: #53190
---
 chart/newsfragments/53190.feature.rst         |  1 +
 .../dag-processor-deployment.yaml             |  4 ++--
 .../dagprocessor/test_labels_deployment.py    | 23 +++++++++++++++++++
 3 files changed, 26 insertions(+), 2 deletions(-)
 create mode 100644 chart/newsfragments/53190.feature.rst

diff --git a/chart/newsfragments/53190.feature.rst b/chart/newsfragments/53190.feature.rst
new file mode 100644
index 0000000000000..ce4e732b8e43e
--- /dev/null
+++ b/chart/newsfragments/53190.feature.rst
@@ -0,0 +1 @@
+Apply Dag processor-specific labels to its Deployment.
diff --git a/chart/templates/dag-processor/dag-processor-deployment.yaml b/chart/templates/dag-processor/dag-processor-deployment.yaml
index d3596527c7765..e025c1b4f86dc 100644
--- a/chart/templates/dag-processor/dag-processor-deployment.yaml
+++ b/chart/templates/dag-processor/dag-processor-deployment.yaml
@@ -41,8 +41,8 @@ metadata:
     release: {{ .Release.Name }}
     chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
     heritage: {{ .Release.Service }}
-    {{- with .Values.labels }}
-      {{- toYaml . | nindent 4 }}
+    {{- if or .Values.labels .Values.dagProcessor.labels }}
+      {{- mustMerge .Values.dagProcessor.labels .Values.labels | toYaml | nindent 4 }}
     {{- end }}
   {{- if .Values.dagProcessor.annotations }}
   annotations: {{- toYaml .Values.dagProcessor.annotations | nindent 4 }}
diff --git a/chart/tests/helm_tests/dagprocessor/test_labels_deployment.py b/chart/tests/helm_tests/dagprocessor/test_labels_deployment.py
index ba5693eee66cb..632d756a01fc0 100644
--- a/chart/tests/helm_tests/dagprocessor/test_labels_deployment.py
+++ b/chart/tests/helm_tests/dagprocessor/test_labels_deployment.py
@@ -57,6 +57,29 @@ def test_should_add_component_specific_labels(self):
             == "test_component_label_value"
         )
 
+    def test_should_merge_global_and_component_specific_labels_in_deployment_metadata(self):
+        """Test metadata.labels merge both global and component labels."""
+        docs = render_chart(
+            values={
+                "labels": {
+                    "test_global_label": "test_global_label_value",
+                    "common_label": "global_value",
+                },
+                "dagProcessor": {
+                    "labels": {
+                        "test_component_label": "test_component_label_value",
+                        "common_label": "component_value",
+                    },
+                },
+            },
+            show_only=[self.TEMPLATE_FILE],
+        )
+
+        labels = jmespath.search("metadata.labels", docs[0])
+        assert labels["test_global_label"] == "test_global_label_value"
+        assert labels["test_component_label"] == "test_component_label_value"
+        assert labels["common_label"] == "component_value"
+
     def test_should_merge_global_and_component_specific_labels(self):
         """Test adding both .Values.labels and .Values.dagProcessor.labels."""
         docs = render_chart(