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Type: Task
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Resolution: Won't Fix
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Priority: Major - P3
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Affects Version/s: mongodb-3.0
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Component/s: manual
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Labels:None
http://docs.mongodb.org/manual/release-notes/3.0-downgrade/
The downgrade of the ReplicaSet nodes running WiredTiger back to MMAP should be initial sync. Using the initial sync procedure has far less steps and opportunities for mistake than the use of dump and restore.