Map-box-tile API endpoint throws FileExistError

[htmlboss]

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[jamesprayner]

Weird. The directory creation is wrapped in an if:

    if not os.path.isdir(basedir):
      os.makedirs(basedir)

The directory that is created is used for multiple tiles (only zoom and x, the filename contains the y coordinate), so probably this is happening when multiple tiles from the same z and x are being requested at the same time (race condition)? Not sure how to approach this.

[htmlboss]

Yeah race condition is possible. The exception itself is vague because it may be thrown when a file or directory already exists.