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Hi narychen,
The issue described by quoted section is specific to MMMAPv1. In WiredTiger, there is a layer of indirection between the document indexed and it's location on disk, consequently a change in disk location would not require all indexes to be updated. MMAPv1 and WiredTiger have very different performance characteristics and I would recommend testing your schema and access patterns to ensure performance matches your expectations.
However, please note that the SERVER project is for reporting bugs or feature suggestions for the MongoDB server. For MongoDB-related support regarding schema design and best practices, please post on the mongodb-user group or Stack Overflow with the mongodb tag. A question like this involving more discussion would be best posted on the mongodb-users group.
Kind regards,
Kelsey
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