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    Type:Bug 
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    Resolution: Cannot Reproduce
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    Priority:Major - P3 
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    None
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    Affects Version/s: None
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    Component/s: None
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        Query Execution
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        ALL
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        None
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findAndModify where the update has already been done
Replica set returned:
"lastErrorObject" : { "n" : 1, "updatedExisting" : true },
mongos on unsharded collection returned:
"lastErrorObject" : { "n" : 1, "updatedExisting" : true },
mongos on sharded cluster returned:
"lastErrorObject" : { "n" : 0, "updatedExisting" : false },
- related to
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                    SERVER-80103 Mongos WriteConcernError Behavior Differs from Mongod -         
- Closed
 
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                    SERVER-100302 Complete TODO listed in SERVER-98603 -         
- Closed
 
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