Details
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Task
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Resolution: Won't Fix
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Minor - P4
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None
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None
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2.6/3.0
Description
If a 2.4 node with 2dsphere indexes is upgraded to 2.6/3.0, the indexes will have an implicit version 1. However, a resync of the node (or sync of a new node) will implicitly recreate the index with explicit version 2.
This shouldn't be a big issue aside from possible (but unlikely) differences in behavior between replica set nodes. Once SERVER-13875 is fixed, sharded clusters should handle this well.