[DOCS-15440] [C2C] Mongosync will not replicate $-prefixed fields during initial sync for GA Created: 23/Jun/22  Updated: 30/Oct/23  Resolved: 29/Jun/22

Status: Closed
Project: Documentation
Component/s: C2C, manual, Server
Affects Version/s: None
Fix Version/s: Server_Docs_20231030

Type: Task Priority: Major - P3
Reporter: Xuerui Fa Assignee: Dave Cuthbert (Inactive)
Resolution: Fixed Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Related
is related to SERVER-67406 Sorting a cursor on sharded coll retu... Closed
Participants:
Days since reply: 1 year, 32 weeks, 6 days ago
Epic Link: DOCSP-22764

 Description   

As described in SERVER-67406, there is a server bug where performing a sort on a cursor will cause the cursor to strip any $-prefixed fields. Since this is what we do in mongosync during initial sync, this will cause any $-prefixed fields to be lost during initial sync.

We should theoretically be able to replicate $-prefixed fields during CEA, but this will be untested.

We should document this limitation for GA.


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