Overpass API developpement

[Roland Olbricht <>]

Hi all,

> In the log file there's also a number of interesting messages:
[...]
> To me it looks like the deleted node in Feb 2012 somehow confuses the
> update process to think the node is already gone - even for an earlier
> point in time.

Thank you for figuring this out. I can now easily explain the missing 
rest: The file isn't strictly consistent. The way 25022705 should either 
have been deleted in 2012, the node 272062486 should have been dropped 
from the way before, or the node 272062486 should not have been deleted 
at all in 2012.

I've not checked all the error messages, but at least this trait of the 
osc file triggers the misbehaviour.

In any case, it would be good to fix the osc file. And this is a bug to 
be fixed in update_database. It should treat the case in a less 
destructive way, e.g. implicitly delete the way or drop the node from 
the way.

> I cannot really imagine that there's a missing time comparison
> somewhere. On the other hand, with minutely diffs being processed in the
> 'normal' setup, this case may be quite unlikely and may not have turned
> up so far.

The main API enforces this consistency condition: you cannot delete a 
node if there is still a way or relation referring to that node.

Best regards,

Roland