mgset-2021316516 [direct: primary] admin> db.adminCommand({ getParameter: 1, maxNumActiveUserIndexBuilds: 1 }) {   maxNumActiveUserIndexBuilds: 1,   ok: 1,   '$clusterTime' : {     clusterTime: Timestamp({ t: 1773997977, i: 1 }),     signature: {       hash: Binary(Buffer.from( "0000000000000000000000000000000000000000" , "hex" ), 0),       keyId: Long ( "0" )     }   },   operationTime: Timestamp({ t: 1773997977, i: 1 }) } mgset-2021316516 [direct: primary] admin> use test_db switched to db test_db mgset-2021316516 [direct: primary] test_db> let docs = [];mgset-2021316516 [direct: primary] test_db> for (let i = 0; i < 1000; i++) { ...     docs.push({ x: i, y: i * 2, z: i * 3 }); ... } 1000 mgset-2021316516 [direct: primary] test_db> db.test_collection.insertMany(docs); mgset-2021316516 [direct: primary] test_db> db.runCommand({createIndexes: "test_collection" , indexes: [{key: {x: -1}, name: "x" }, {key: {y: -1}, name: "y" }, {key: {z: -1}, name: "z" }]}) {   numIndexesBefore: 1,   numIndexesAfter: 4,   createdCollectionAutomatically: false ,   commitQuorum: 'votingMembers' ,   ok: 1,   '$clusterTime' : {     clusterTime: Timestamp({ t: 1773998244, i: 7 }),     signature: {       hash: Binary(Buffer.from( "0000000000000000000000000000000000000000" , "hex" ), 0),       keyId: Long ( "0" )     }   },   operationTime: Timestamp({ t: 1773998244, i: 7 }) }