Anybody seen this before in 4.0.23 sharded cluster? 2021-09-23T08:41:41.674+0200 I SHARDING [Balancer] Balancer move config.system.sessions: [{ _id: MinKey }, { _id: { id: UUID(“00400000-0000-0000-0000-000000000000”) } }), from s0, to s3 failed :: caused by :: OperationFailed: Data transfer error:…

Hello, @Konstantin_Manchev1 I ran into a similar issue and had to drop system.sessions collection from any router and let mongo recreate it after next logicalSessionRefresh. Although I had version 4.2.13. You might need to run flushRouterConfig from each router after dropping that collection or rest…

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Cannot create collection config.system.sessions because we already have an identically named collection

Ops and Admin Sharding

Kay_Agahd (Kay Agahd) October 7, 2021, 9:00am 5

link of the issue