[Imports] Optimal ChangeSet size

[Thomas Wood]

Be aware that there is a difference between changeset size and diff upload size.
bulk_upload sets the changeset size incorrectly at 1000, it means to
set the diff upload size to that.

The reasoning for this is that when diff uploads were first
introduced, the server had some issues with the number of features it
could process. I'm not sure if this has changed since.

2009/7/22 Mike N. <niceman at att.net>:
> What is the optimal size of a changeset, and what are the tradeoffs in
> changing the size?   From what I understand, the API limit is 50000 , but it
> would be good to keep below this so that later revisions to the changeset do
> not push it over.
>
>  bulk_upload.php sets its limit at 1000 , which seems a bit small when
> uploading lots of data - 50,000 nodes will create 50 changesets.      Is
> there any disadvantage to many changesets?   Nodes are more likely to be in
> different changesets than the ways.
>
>  Increasing the size might result in more lost upload time in case of a
> network error - a larger changeset upload session will be lost.     On the
> other hand, if I increase the limit to 5000 or 10000 , does this slow down
> future map edits by requiring fetching larger amounts of data from
> changesets?  (I'm not sure how that works).
>
>   Thanks,
>
>  Mike
>
>
>
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-- 
Regards,
Thomas Wood
(Edgemaster)