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Backwards Compatibility:
Fully Compatible
Operating System:
ALL
Steps To Reproduce:
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For instance in JS test file - jstests/noPassthrough/change_streams_cluster_parameter.js for a struct-type parameter changeStreams with field expireAfterSeconds (safeInt64, default 3600),

adminDB.runCommand({setClusterParameter: {changeStreams:{}}}); adminDB.runCommand({getClusterParameter: "changeStreams"});

The last command returns on mongoS

"clusterParameters" : [ { "_id" : "changeStreams", "clusterParameterTime" : Timestamp(1654725012, 66), } ]

and on mongoD

"clusterParameters" : [ { "_id" : "changeStreams", "clusterParameterTime" : Timestamp(1654725012, 66), "enabled" : false, "expireAfterSeconds": NumberLong(3600) } ]
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For instance in JS test file - jstests/noPassthrough/change_streams_cluster_parameter.js for a struct-type parameter changeStreams with field expireAfterSeconds (safeInt64, default 3600), adminDB.runCommand({setClusterParameter: {changeStreams:{}}}); adminDB.runCommand({getClusterParameter: "changeStreams" }); The last command returns on mongoS "clusterParameters" : [ { "_id" : "changeStreams" , "clusterParameterTime" : Timestamp(1654725012, 66), } ] and on mongoD "clusterParameters" : [ { "_id" : "changeStreams" , "clusterParameterTime" : Timestamp(1654725012, 66), "enabled" : false , "expireAfterSeconds" : NumberLong(3600) } ]
Sprint:
Security 2022-11-14
CAR Domain/s:
None

For a struct-type parameter, the default values are serialized differently on mongoD and on mongoS.

depends on

SERVER-67876 Enable Feature flag 2 for Mechanism for Specifying Cluster-Wide Configuration Options

related to

SERVER-70980 Complete TODO listed in SERVER-67145