Dealing with problems in the A* landmark table

eclipse-sumo / sumo

Eclipse SUMO is an open source, highly portable, microscopic and continuous traffic simulation package designed to handle large networks. It allows for intermodal simulation including pedestrians and comes with a large set of tools for scenario creation.

https://eclipse.dev/sumo

Eclipse Public License 2.0

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Dealing with problems in the A* landmark table #8245

Open behrisch opened 3 years ago

behrisch commented 3 years ago

currently there are four different strategies when problems with the landmark file occur

File not found -> end with error
Landmark not found -> Warn and ignore the landmark
no landmarks in file -> fall back to simple A*
incomplete data -> warn and try to continue (even with wrong data!)

At least the last case is very error prone. I would rather fail always (end with an error) but please discuss.

namdre commented 3 years ago

What about the case where the landmark file only contains the landmark ids and the table shall be generated based on that?

behrisch commented 3 years ago

This is not considered a problematic case but an expected input.

behrisch commented 3 years ago

Fail early should mean very early not after a lot of simulation time.