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In sharded 7.2 clusters, the object inside $searchMeta is not being correctly passed to shards after PlanShardedSearch When running an aggregation pipeline like [ { '$searchMeta': { index: 'drugs', facet: { operator: { exists: { path: 'id' } }, facets: { manufacturers: { type: 'string', path: 'openfda.manufacturer_name', numBuckets: 10 }, routes: { type: 'string', path: 'openfda.route', numBuckets: 10 } } } } } ] We can see this line in logs (verbosity set to 5): mongos_1 | {"t":{"$date":"2024-01-24T23:16:42.756+00:00"},"s":"D4", "c":"ASIO", "id":22596, "ctx":"conn63","msg":"startCommand","attr":{"request":"RemoteCommand 3610 -- target:[mongod3.internal:27017] db:ClinicalTrials cmd:{ aggregate: \"drug_data\", pipeline: [ { $searchMeta: { mongotQuery: { index: \"drugs\", facet: { operator: { exists: { path: \"id\" } }, facets: { manufacturers: { type: \"string\", path: \"openfda.manufacturer_name\", numBuckets: 10 }, routes: { type: \"string\", path: \"openfda.route\", numBuckets: 10 } } } }, metadataMergeProtocolVersion: 1, limit: 0, sortSpec: { $searchScore: -1 } } } ], cursor: { batchSize: 101 }, let: { NOW: { $literal: new Date(1706138202749) }, CLUSTER_TIME: { $literal: Timestamp(1706138199, 1) } }, fromMongos: true, readConcern: { level: \"local\", provenance: \"implicitDefault\" }, writeConcern: { w: \"majority\", wtimeout: 0, provenance: \"implicitDefault\" }, shardVersion: { e: ObjectId('000000000000000000000000'), t: Timestamp(0, 0), v: Timestamp(0, 0) }, databaseVersion: { uuid: UUID(\"d802bb99-99e8-459c-9cbe-f2f0022b87ba\"), timestamp: Timestamp(1706136857, 2), lastMod: 1 }, clientOperationKey: UUID(\"b007cb63-4766-4610-ad39-7581861db2b5\"), lsid: { id: UUID(\"b3530e27-f57f-47a4-8fc0-04a7cc551bed\"), uid: BinData(0, A009A5C38A39FA832F5D8E5FA067A58CC80A0E8F29A0F501773556AC0B1B33AD) } }"}} The relevant part of this line, post-formatting, is: { pipeline: [ { $searchMeta: { mongotQuery: { index: "drugs", facet: { operator: { exists: { path: "id" } }, facets: { manufacturers: { type: "string", path: "openfda.manufacturer_name", numBuckets: 10 }, routes: { type: "string", path: "openfda.route", numBuckets: 10 } } } }, metadataMergeProtocolVersion: 1, limit: 0, sortSpec: { $searchScore: -1 } } } ] } Notice that in this pipeline, there is a "mongotQuery" object inside $searchMeta - this object should not exist. Keys+values inside this mongotQuery object should be children of the $searchMeta object. This is making it so that users are unable to use search facets on sharded clusters on version 7.2.0.
xgen-internal-githook commented on Mon, 18 Mar 2024 17:44:44 +0000: Author: {'name': 'Charlie Swanson', 'email': 'charlie.swanson@mongodb.com', 'username': 'cswanson310'} Message: SERVER-85694 Ability to parse serialized output for $searchMeta (#18633) GitOrigin-RevId: 57e0107998c45c39dcd8b90ed97a99b326aaa5df Branch: v7.3testCopybaraCreateNewBranch https://github.com/mongodb/mongo/commit/161a61b79903e5700e98e225b7a38df1609c5be2 xgen-internal-githook commented on Thu, 8 Feb 2024 00:14:09 +0000: Author: {'name': 'Charlie Swanson', 'email': 'charlie.swanson@mongodb.com', 'username': 'cswanson310'} Message: SERVER-85694 Ability to parse serialized output for $searchMeta (cherry picked from commit ea677d2a0a6d94b798da18dfb269f679ff67df57) Branch: v7.2 https://github.com/mongodb/mongo/commit/ddaeb72a9a1130c09ab79b4cb61634c457ceebc1 xgen-internal-githook commented on Fri, 2 Feb 2024 21:51:44 +0000: Author: {'name': 'Charlie Swanson', 'email': 'charlie.swanson@mongodb.com', 'username': 'cswanson310'} Message: SERVER-85694 Ability to parse serialized output for $searchMeta (#18633) GitOrigin-RevId: 57e0107998c45c39dcd8b90ed97a99b326aaa5df Branch: v7.3 https://github.com/mongodb/mongo/commit/ad6e38e8d7d1ea6c7287a38a09e5744a3110243e xgen-internal-githook commented on Fri, 2 Feb 2024 17:06:28 +0000: Author: {'name': 'Charlie Swanson', 'email': 'charlie.swanson@mongodb.com', 'username': 'cswanson310'} Message: SERVER-85694 Ability to parse serialized output for $searchMeta (#18633) GitOrigin-RevId: b9e1075e2679bc029ac593afc365f5b0b0ef46bc Branch: master https://github.com/mongodb/mongo/commit/ea677d2a0a6d94b798da18dfb269f679ff67df57 JIRAUSER1265798 commented on Sat, 27 Jan 2024 00:15:13 +0000: Sending back to evan.nixon@mongodb.com as this has been out of my knowledge now.
On a sharded cluster running 7.2.0: Insert a document in collection "drug data": { id: '12345', openfda: { manufacturer_name: 'CSS Pharmacy', route: [ 'ORAL' ] } } Create a search index named "drugs" over collection "drug_data": { "name": "drugs", "mappings": { "dynamic": false, "fields": { "id": { "analyzer": "lucene.keyword", "searchAnalyzer": "lucene.keyword", "type": "string" }, "openfda": { "fields": { "manufacturer_name": [ { "type": "string" }, { "type": "token" }, { "type": "stringFacet" } ], "route": [ { "type": "string" }, { "type": "stringFacet" } ] }, "type": "document" } } } } Run a query over collection "drug_data": db.drug_data.aggregate([ { '$searchMeta': { index: 'drugs', facet: { operator: { exists: { path: 'id' } }, facets: { manufacturers: { type: 'string', path: 'openfda.manufacturer_name', numBuckets: 10 }, routes: { type: 'string', path: 'openfda.route', numBuckets: 10 } } } } } ]) Observe error message: MongoServerError: mongot returned an error :: caused by :: Query should contain either operator or collector
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