[SERVER-37760] New shard added, chunk migration starts throwing errors after a few chunks transferred Created: 26/Oct/18  Updated: 26/Oct/18  Resolved: 26/Oct/18

Status: Closed
Project: Core Server
Component/s: Sharding
Affects Version/s: 3.6.8
Fix Version/s: None

Type: Question Priority: Major - P3
Reporter: Sanjay Gianchandani Assignee: Unassigned
Resolution: Incomplete Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Participants:

 Description   

MDB 3.6.8 with MMAP, sharded cluster – After moving 2 chunks to the new shard, Balancer is throwing this error and not moving any chunks to a newly added shard –

Error occurred while committing the migration. Performing a majority write against the config server to obtain its latest optime :: caused by :: NoSuchKey: Missing expected field "shardHasDistributedLock"

What could be causing this and how to get past this issue?


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