memgraph
error when calling tsp.solve()
Hi, I am not sure if this is a bug or if I am doing something wrong, which is why I am opening it as a blank issue.
When I call tsp.solve() I get the following error message:
tsp.solve: Traceback (most recent call last): File "/usr/lib/memgraph/query_modules/tsp.py", line 44, in solve dm = create_distance_matrix([dict(x.properties.items()) for x in points]) File "/usr/lib/memgraph/query_modules/tsp.py", line 44, in dm = create_distance_matrix([dict(x.properties.items()) for x in points]) File "/usr/lib/memgraph/python_support/mgp.py", line 299, in items prop = properties_it.next() _mgp.LogicErrorError: Logic error.
I've gone through the documentation for tsp and the code all the way down to 'mgp.py'. My nodes have propertioes 'lng' and 'lat' but as far as i can see there is something wrong when the code is iterating the node to find these properties.
The logfile says following:
[2025-03-14 15:56:51.737] [memgraph_log] [error] Logic error during mg API call: mgp_value for PropertyValue::Type::Point2d doesn't exist. Contact Memgraph team under [email protected] or open a new issue / comment under existing one under github.com/memgraph/memgraph. [2025-03-14 15:56:51.737] [memgraph_log] [trace] Error message: tsp.solve: Traceback (most recent call last): File "/usr/lib/memgraph/query_modules/tsp.py", line 44, in solve dm = create_distance_matrix([dict(x.properties.items()) for x in points]) File "/usr/lib/memgraph/query_modules/tsp.py", line 44, in dm = create_distance_matrix([dict(x.properties.items()) for x in points]) File "/usr/lib/memgraph/python_support/mgp.py", line 299, in items prop = properties_it.next() _mgp.LogicErrorError: Logic error.
The query: MATCH (n:NO_RoadNode) WHERE n.nodeid >= 1769300 AND n.nodeid <= 1769305 WITH COLLECT(n) AS nodes CALL tsp.solve(nodes) YIELD sources, destinations RETURN sources, destinations;
I run Memgraph 3.0 in Docker on Windows.
Please tell me if you need more information./Thank you
Hi @AnBjCru, it looks like some iteration problem; we will take a look; thanks for reporting this.
Does this block you massively? What are you trying to build?
Does this block you massively? What are you trying to build? We want to evaluate it for coming proposal to a customer.
Hi @AnBjCru, I think it's best you book an office hours call with us so we can further understand your needs and help you accelerate your proposal - https://memgraph.com/office-hours
Quick update for anyone tackling this in the future - after the Office Hours call, the user shared a dataset and detailed steps to replicate the issue in an email thread.
