Implement a new mongos {fsyncUnlock : 1} command to unlock the shards (by invoking the mongod {fsyncUnlock : 1} command) in the cluster asynchronously (using this helper which uses the AsyncRequestsSender).
- On success, the host: port of the unlocked shards must be returned to the user.
- On failure to unlock a shard, an appropriate error message must be returned to the user.
- causes
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SERVER-89642 Invalid role configuration for fsyncunlock command
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- In Code Review
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