Hello Chuck;

I can only guess that it is comparing snapshots' keys to find the correct snapshot to "replace" from the inbound data (from the fetch) in a map's bucket which is quite large.

cheers.

Comparing snapshots would not be for uniquing. Unique tests would be some variation of snapshotDict.objectForKey(gid). If it is comparing snapshots, it is as a result of you fetching objects already in memory with a refreshing fetch (or maybe even a non- refreshing one, I don't recall at the moment). It will also do this for updated objects in an EC as part of save processing. I don't recall any other time when it would be comparing snapshots.

___
Andrew Lindesay
www.lindesay.co.nz

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