[Rebase] Rebase to vllm 0.27.0 (#5976)

Signed-off-by: tzhouam <tzhouam@connect.ust.hk>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>

tests/distributed/omni_connectors/test_bagel_shared_memory_connector.py

@@ -33,16 +33,19 @@ BAGEL_CI_DEPLOY = get_deploy_config_path("ci/bagel.yaml")
 # Generated with seed=52, num_inference_steps=15,
 # prompt='Change the grass color to red',
 # input image: 2560px-Gfp-wisconsin-madison-the-nature-boardwalk.jpg
+# Re-goldened from the vLLM-0.27-aligned output (nightly builds 2953/2954
+# produced bit-identical pixels across two different torch/base images; only
+# (512, 336) moved beyond tolerance vs the main-branch goldens from #5898).
 REFERENCE_PIXELS = [
-    {"position": (100, 100), "rgb": (156, 172, 217)},
+    {"position": (100, 100), "rgb": (157, 172, 217)},
     {"position": (400, 50), "rgb": (105, 144, 217)},
     {"position": (700, 100), "rgb": (118, 159, 232)},
-    {"position": (150, 400), "rgb": (180, 22, 52)},
-    {"position": (512, 336), "rgb": (221, 211, 194)},
-    {"position": (700, 400), "rgb": (192, 10, 46)},
-    {"position": (100, 600), "rgb": (102, 12, 22)},
-    {"position": (400, 600), "rgb": (161, 28, 47)},
-    {"position": (700, 600), "rgb": (100, 87, 94)},
+    {"position": (150, 400), "rgb": (185, 21, 55)},
+    {"position": (512, 336), "rgb": (205, 215, 191)},
+    {"position": (700, 400), "rgb": (193, 11, 48)},
+    {"position": (100, 600), "rgb": (103, 14, 25)},
+    {"position": (400, 600), "rgb": (159, 28, 48)},
+    {"position": (700, 600), "rgb": (101, 87, 94)},
     {"position": (256, 256), "rgb": (181, 201, 221)},
 ]
 
@@ -141,13 +144,24 @@ def _validate_pixels(
     Raises:
         AssertionError: If any pixel differs beyond tolerance.
     """
+    mismatches = []
+    probes = []
     for ref in reference_pixels:
         x, y = ref["position"]
         expected = ref["rgb"]
         actual = image.getpixel((x, y))[:3]
-        assert all(abs(a - e) <= tolerance for a, e in zip(actual, expected)), (
-            f"Pixel mismatch at ({x}, {y}): expected {expected}, got {actual}"
-        )
+        probes.append(f'    {{"position": ({x}, {y}), "rgb": {actual}}},')
+        if not all(abs(a - e) <= tolerance for a, e in zip(actual, expected)):
+            mismatches.append(f"({x}, {y}): expected {expected}, got {actual}")
+    # Report every probe, not just the first mismatch: CI does not upload the
+    # generated image, so this failure message is the only place the full
+    # actual-value table exists when the goldens need to be regenerated.
+    assert not mismatches, (
+        f"Pixel mismatch at {len(mismatches)} probe(s) (tolerance ±{tolerance}):\n  "
+        + "\n  ".join(mismatches)
+        + "\nActual values at all probes (paste as the new reference table if re-goldening):\n"
+        + "\n".join(probes)
+    )
 
 
 def _generate_bagel_img2img(

tests/distributed/omni_connectors/test_chunk_transfer_adapter.py

@@ -1094,6 +1094,12 @@ class _HashableRequest(SimpleNamespace):
     # request; real Requests initialise it to 0 (vllm/v1/request.py).
     num_in_flight_tokens = 0
 
+    # vLLM 0.27 (a0c092ee72): the stale-output counter that replaced
+    # async_tokens_to_discard. update_from_output reads it for every scheduled
+    # request, and real Requests initialise it to 0 (vllm/v1/request.py), so the
+    # double needs it too.
+    num_stale_output_tokens = 0
+
     def __hash__(self):
         return hash(self.request_id)