Description

Starting from v5.0, the ns field of config.chunks is replaced by the uuid field, while the lastmodEpoch field has been thrown out. Hence, the current example should be updated.

Replace "ns" : "mydb.foo", with "uuid": "c025d039-e626-435e-b2d2-c1d436038041", and remove "lastmodEpoch" : ObjectId("5d8aa9fbe7a2f52c300e8e6f"), .

EDIT: also config databases and config.collections have changed, you may repurpose the existing entries with the fields present in the two following examples. They do not contain all optional fields, but that should be fine since customers should not touch internal collections.

Example of new config.collections entry:

{
        "_id" : "nameOfTheDatabase.nameOfTheCollection",
        "lastmodEpoch" : ObjectId("60f989a2430bfdd95d8cfa20"),
        "lastmod" : ISODate("2021-07-22T15:07:14.301Z"),
        "timestamp" : Timestamp(1626966434, 13),
        "uuid" : UUID("c88e9237-ae8b-452e-9d89-bcdcaaa763db"),
        "key" : {
                "num" : 1
        },
        "unique" : false,
        "noBalance" : false
}

Example of new config.databases entry:

{
  "_id" : "nameOfTheDatabase",
  "primary" : "shard3-rs1",
  "partitioned" : true,
  "version" : {
  "uuid" : UUID("b0f9c370-536b-4028-bf7e-2b5dad36395a"),
  "timestamp" : Timestamp(1626966433, 34),
  "lastMod" : 1
}

Scope of changes

Impact to Other Docs

MVP (Work and Date)

Resources (Scope or Design Docs, Invision, etc.)