henry3260 commented on code in PR #61242:
URL: https://github.com/apache/airflow/pull/61242#discussion_r2745661156


##########
airflow-core/tests/integration/otel/test_otel.py:
##########
@@ -55,6 +56,44 @@
 log = logging.getLogger("integration.otel.test_otel")
 
 
+def wait_for_otel_collector(host: str, port: int, timeout: int = 120) -> None:
+    """
+    Wait for the OTel collector to be reachable before running tests.
+
+    This prevents flaky test failures caused by transient DNS resolution issues
+    (e.g., 'Temporary failure in name resolution' for breeze-otel-collector).
+
+    Note: If the collector is not reachable after timeout, logs a warning but
+    does not fail - allows tests to run and fail naturally if needed.
+    """
+    deadline = time.monotonic() + timeout
+    last_error = None
+    while time.monotonic() < deadline:
+        try:
+            # Test DNS resolution and TCP connectivity
+            sock = socket.create_connection((host, port), timeout=5)
+            sock.close()

Review Comment:
   ```suggestion
               with socket.create_connection((host, port), timeout=5):
                   pass
   ```



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