Use larger length threshold in msgpack for all types (fix #1003)

tensorpack/utils/serialize.py

@@ -8,6 +8,8 @@ from . import logger
 
 __all__ = ['loads', 'dumps']
 
+MAX_MSGPACK_LEN = 1000000000
+
 
 def dumps_msgpack(obj):
     """
@@ -26,7 +28,11 @@ def loads_msgpack(buf):
     """
     # Since 0.6, the default max size was set to 1MB.
     # We change it to approximately 1G.
-    return msgpack.loads(buf, raw=False, max_bin_len=1000000000)
+    return msgpack.loads(buf, raw=False,
+                         max_bin_len=MAX_MSGPACK_LEN,
+                         max_array_len=MAX_MSGPACK_LEN,
+                         max_map_len=MAX_MSGPACK_LEN,
+                         max_str_len=MAX_MSGPACK_LEN)
 
 
 def dumps_pyarrow(obj):