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Type:
Question
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Resolution: Works as Designed
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Priority:
Major - P3
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None
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Affects Version/s: 3.0.12, 3.2.16, 4.0.0-rc0
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Component/s: Index Maintenance
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None
//collection indexes > db.Collection.getIndexes()> db.Collection.getIndexes() [ ... { "v" : 2, "unique" : true, "key" : { "user" : 1, "word" : 1 }, "name" : "user_1_word_1", "ns" : "sample.Collection", "background" : true }, { "v" : 2, "key" : { "user.$id" : 1, "word" : 1, "image" : 1 }, "name" : "user.$id_1_word_1_image_1", "ns" : "sample.Collection", "background" : true }]
query results with different results
// storeage Engine: wiredTiger > db.Collection.find({"user" : DBRef("_User", ObjectId("5a5d783bee920a005896c55f"))},{"_id":1,"user":1}).hint("user_1_word_1").count() 39 > db.Collection.find({"user" : DBRef("_User", ObjectId("5a5d783bee920a005896c55f"))},{"_id":1,"user":1}).hint("user.$id_1_word_1_image_1").count() 8
index form will affect the data? Or were there right?
I reproduces on v3.0, v3.2, v4.0-rc, may be affect more. reproduce process:
// download attachments to $data_full_path // md5: a14368dbab317182a4826caa0e7bc41d sample.tgz // pull mongo images docker pull mongo:3.4.0-rc docker run -v $data_full_path:/x mongo:4.0-rc --setParameter failIndexKeyTooLong=false // another terminal in docker mongorestore --db sample --dir=./sample // then query mongo 127.0.0.1:27017/sample --eval 'db.Collection.find({"user" : DBRef("_User", ObjectId("5a5d783bee920a005896c55f"))},{"_id":1,"user":1}).hint("user_1_word_1").count()' // result: 39 mongo 127.0.0.1:27017/sample --eval 'db.Collection.find({"user" : DBRef("_User", ObjectId("5a5d783bee920a005896c55f"))},{"_id":1,"user":1}).hint("user.$id_1_word_1_image_1").count()' // result: 8
Any help will be appreciate.
- related to
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SERVER-5290 fail to insert docs with fields too long to index, and fail to create indexes where doc keys are too big
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- Closed
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