[osmosis-dev] possible concurrency issue when using --apply-change

[Andrew Harvey]

Hi,

I'm using Osmosis to apply an .osc osm change file to an existing .osm
file to produce a new .osm file with the changes from the .osc with:

osmosis --read-xml-change file="change.osc.gz" --sort-change
--simplify-change --read-xml file="base.osm.gz" --sort --apply-change
--write-xml file="patched.osm.gz"

However I find that sometimes this works and sometimes it fails. When I
say sometimes I mean if I run the same command line on the same source
files multiple tiles maybe 20% of the time it will crash with messages
like that attached. That really threw me off so my only thought is it is
a concurrency issue at play.

I will keep trying to find the problem but any hints or thoughts would help.

Thank you.
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