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Multiple unique single indexes in sharded collections

MongoDB sharded collection can only have one unique index which is the shard key. However, in real applications, one might need more than one single unique index. "Proxy" collections suggested in https://www.mongodb.com/docs/manual/tutorial/unique...

Guest over 1 year ago in Data Modeling & Indexing 1 Submitted

4 VOTE

Data masking policy

Implement Data masking similar to Schema Validation in Mongo so that customer can define a server-side data masking policy to mask the results of a query and a new role which will give explicit permission to users for reading unmasked data

Guest over 5 years ago in Database 0 Submitted

4 VOTE

Extend db.collection.distinct() to work with multiple fields in a compound key

Currently the distinct() command finds the unique set of values for a SINGLE specified field across a collection or view. For example: db.staff.distinct("last_name" ) If there is an index on the last_name field, the DISTINCT_SCAN plan can use th...

Guest over 5 years ago in Database 1 Submitted

2 VOTE

Flatten arrays in group stage

Have group operators to flatten document arrays into a single one with or without repeated elements. So -> doc1 = {arr: [1,2,3,4], gr: "group"}, doc2 = {arr: [5, 6, 7, 8], gr: "group"} {$group: {_id: "$gr", arrays: {$***: "$arr"} } } => {_id...

Guest almost 3 years ago in Querying & Aggregations 1 Submitted

4 VOTE

wired

wiredTiger open files usage Currently WT uses a file per collection and index, leading in some scenarios to extremely high number of open files/dhandles. Is there any plan to support one file/dhandle per database?

Guest over 5 years ago in Storage & Transactions 0 Submitted

4 VOTE

Allow multiple text indexes per collection

MongoDb only allow one text index by collection, in contrast of other index types. This is a limitation that makes it difficult to develop projects with search functionality, for example, if you want to add a text search for advanced users on all...

Guest over 5 years ago in Data Modeling & Indexing 1 Submitted

4 VOTE

Ability to enable collection name enforcement

Currently if you perform a find or other operation, and you have a typo in your collection name, the operation will execute successfully and there is no indication that the collection you are operating on doesn't exist. It would be handy if there ...

Guest over 5 years ago in Database 0 Submitted

2 VOTE

Cascading delete for DBRefs

Since transactions have been added in 2018, which work across collections (https://www.mongodb.com/docs/manual/core/transactions/) and across shards (https://www.mongodb.com/docs/manual/core/transactions-sharded-clusters/), shouldn't cascading del...

Guest almost 3 years ago in Storage & Transactions 0 Submitted

4 VOTE

Improve the election process to consider node reachability

Consider both new and existing sockets to be utilized in order to make more realistic observations about cluster health during an election to avoid for example DNS related issues which would make a node unreachable for new connections.

Guest almost 6 years ago in Database 0 Submitted

4 VOTE

Upgrade Advisor

Similar to Microsoft's SQL Server Upgrade Advisor application, generate a report (from Ops Manager for example) identifying issues to fix before or after an upgrade from one major version to another.

Guest almost 6 years ago in Database 0 Submitted

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