SERVER-9112 Config Servers as replica set

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• Closed

SERVER-18380 Make mongos use read-after-optime when consulting config servers

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• Closed

SERVER-13530 Check existence of "version" collection periodically

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• Closed

SERVER-19884 All config server crash

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• Closed

SERVER-17617 One config server being down can block read operations on config data for seconds

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• Closed

SERVER-19696 Don't allow using a replica set as the config server unless it has configServer:true in its replica set config

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• Closed

SERVER-5960 mongos config server order should not matter

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• Closed

SERVER-3353 ismaster should return a msg for a config server

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• Backlog

SERVER-5188 Load balance reads across config servers

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• Closed

SERVER-2512 don't allow adding a config server as a shard

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• Closed

SERVER-5119 why 1 or 3 config server ? why not 2 or 4 5 . can u explain it.

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• Closed

SERVER-1658 make adding/changing config servers easy

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• Closed

SERVER-11980 Improve user cache invalidation enforcement on mongos

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• Closed

SERVER-22936 Zero-downtime upgrade from mirrored (SCCC) to replica set (CSRS) config servers

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• Closed

SERVER-3698 When mongos reports config servers not in sync, also report which to sync from

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• Closed