[release-1.18] internal/dag: don't walk DAG to look for service (#4061) #4066
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Removes code that walks the DAG looking for
a matching existing Service when adding a
new Service. This code is very inefficient
when the DAG is large and creates a
performance bottleneck. Some extra memory
may end up being used if duplicate Services
are created, but it's unlikely to be a
material issue in practice.
Closes #4058.
Signed-off-by: Steve Kriss [email protected]