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.mirror/mirror_worker.py

@@ -83,7 +83,13 @@ def direct_download(path: str, target: Path, size: int, expected_sha256: str | N
             (start, min(size - 1, start + range_size - 1))
             for start in range(0, size, range_size)
         ]
-        timeout = httpx.Timeout(connect=30.0, read=120.0, write=120.0, pool=30.0)
+        # A failed small-object request does not become healthier after two
+        # minutes.  Fail it quickly and leave it for the next pass; retain the
+        # longer timeout/retry budget for genuinely large ranges.
+        small_object = size < 128 * 1024 * 1024
+        request_attempts = 3 if small_object else 8
+        read_timeout = 35.0 if small_object else 120.0
+        timeout = httpx.Timeout(connect=20.0, read=read_timeout, write=120.0, pool=30.0)
         limits = httpx.Limits(max_connections=20, max_keepalive_connections=16)
         with httpx.Client(
             # ModelScope's redirect endpoint intermittently resets HTTP/2
@@ -99,7 +105,7 @@ def direct_download(path: str, target: Path, size: int, expected_sha256: str | N
             def fetch(byte_range: tuple[int, int]) -> None:
                 start, end = byte_range
                 full_file_response = start == 0 and end == size - 1
-                for attempt in range(8):
+                for attempt in range(request_attempts):
                     try:
                         # A few tiny ModelScope objects return an empty 200 to
                         # a Range request. Retry their single full-file range
@@ -121,7 +127,7 @@ def direct_download(path: str, target: Path, size: int, expected_sha256: str | N
                                 raise RuntimeError(f"short range {start}-{end}: got {offset - start}")
                         return
                     except Exception:
-                        if attempt == 7:
+                        if attempt == request_attempts - 1:
                             raise
                         time.sleep(min(60, 2 ** attempt))