[TINKERPOP-3105] Running 3.6.x python-driver with 3.7.x server leads to deserialization errors

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 3.7.2
• Fix Version/s: 3.7.3
• Component/s: io, python, server
• Assignee: Yang Xia
• Reporter: Yang Xia
• Created: 19/Aug/24 21:06
• Updated: 25/Sep/24 16:51
• Resolved: 25/Sep/24 16:51

Description

Running 3.6.x gremlin-python with 3.7.x gremlin-server leads to serialization errors:

return self.deserializers[DataType(bt)].objectify(buff, self, nullable)
KeyError: <DataType.custom: 0>

with or without using ReferenceElementStrategy set on the server, possibly due to a bug in how properties are being serialized and returned from Java that is not inline with the specification.