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tilemill-project / tilemill

TileMill is a modern map design studio
https://tilemill-project.github.io/tilemill/
BSD 3-Clause "New" or "Revised" License
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Missing layers shouldn't stop rendering #2722

Open csytsma opened 5 years ago

csytsma commented 5 years ago

**A clear and concise description of what the problem is. When viewing the base map, if there is a problem with a layer, such as it can't be found, or error with the SQL, the map stops rendering. A single layer will completely stop the workflow.

Describe the solution or feature that you'd like The rendering of the map should gracefully continue even if a layer can't be rendered.

Komzpa commented 5 years ago

This means the error gets unnoticed and it takes even more time to find. Imagine database shutdown mid-export that will break half of exported map that will get published but be plain wrong.

csytsma commented 5 years ago

During the initial map rendor (non-export), it shouldn't go unreported. It should still display a modal error, and perhaps flag the Layer and the Layer Drawer that there is a Layer with an error.

During an Export, it should stop if there is a problem with a Layer.  Ideally these could be handled differently.