Database
272 results found
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1 vote
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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 deletes be possible now? I only worked with sql transactions in the past, but my intuition would be that it should be fairly easy to do this in a client:
- start a transaction
- fetch document
- look for dbref fields
- fetch those docs
- continue at 2 until all docs have been found, stopping at branches when a doc has already been fetched
- go back in reverse and delete all of them
- commit transaction
If this is possible to do…
1 vote -
Support change streams without service discovery
Currently, change streams are not supported in standalone instances, so testing change stream functionality requires a one-node replica set. However, promoting a standalone node to a one-node replica set requires a call to
rs.initiate(config), which requires host and port information so that clients can connect; something that is not required for standalone nodes. This means change stream support is conflated with service discovery. It becomes impossible, for example, to create a docker image that boots as a single-node replica set, while it's trivial to make a docker image that boots as a standalone server.Various ideas that would make…
1 vote -
Avoid truncating the query on the Atlas profiler or system.profile collection
Slow running queries that are captured in system.profile collection or on profiler page of Atlas are truncated if the query is too long. As an Application DBA, it would be difficult to analyse the query without figuring out the actual query. The current limitation of command document is 50Kb. Request you to consider this limitation to avoid truncation of queries.
1 vote -
geo
It would be nice to get the length of an LineString of a geo-json object or the possibility to write an aggregation to calculate it.
2 votes -
Expose individual command execution time
Many MongoDB drivers currently expose events (CommandSucceededEvent say) which provide an elapsed time. However, that elapsed time is the round-trip time, which is not super useful as that can be measured by a programmer manually. It would be neat if there was a way to get the actual time spent by the server on a per-command basis. This data is computed somewhere as it is exposed in Atlas metrics as Execution Time.
There's the explain facility but this is just to get an estimate of a query's cost. I would be interested in knowing how much time the server spent…
1 vote -
Use a private peering that resolves to the private IP address of your LDAP server.
We need to consume an LDAP server traffic through Private Endpoints. In the documentation we find that only creating a public endpoint it's possible but we have a security restriction. Our TAM suggested create a feedback request to the product owner.
tks!4 votes -
Improve fortification coverage with _FORTIFY_SOURCE=3
MongoDB Server codebase uses
_FORTIFY_SOURCE=2fortification level (e.g. see v7.0, latest at the moment: https://github.com/mongodb/mongo/blob/v7.0/SConstruct#L4698).
Consider changing it to a new fortification level (_FORTIFY_SOURCE=3) provided by GCC 12 to improve DB's security.See also:
https://fedoraproject.org/wiki/Changes/Add_FORTIFY_SOURCE%3D3_to_distribution_build_flags
https://developers.redhat.com/articles/2022/09/17/gccs-new-fortification-level1 vote -
I believe the future is for AI to assist the user in simple but sometimes frustrating tasks like connecting or finding the correct build
An Artificial Intelligence assistance would be very useful to the user for finding the correct configuration and helping set up connections. There are many deprecated components, especially if you are trying to integrate a IoT platform like Raspberry Pi. It would be great for the system to recognize what you are trying to do and guide you along the right path.
1 vote -
amazon linux 2023 (AL2023) support for ARM
Amazon Linux 2023 (AL2023) support for ARM (MongoDB and CloudManager)
1 vote -
Add SHA2, SHA3 and ECDSA functions to agg framework
It is very useful (and valuable security-wise) to be able to reverify hashes and signatures "on-engine" instead of dragging material out to a client app and running the algo there. The implementations are straightforward and everywhere now so it's not a huge lift for the backend. Example use:
aggregate([
{$match: whatever},
{$addFields: {
hashok: {$cond: [ {$eq: [ {$sha3: "path.to.struct"}, "path.to.stored.sha3"} ], 1, 0},
sigok: { $verify: { sig: "path.to.sig", pubkey: "path.to.pubkey", algo: "name of curve to use eg. SECP256k1}}
}
])
The digest function would operate on the raw BSON behind the scenes.1 vote -
Document scoped RBAC - Permission for collection document fields
Roles and accesses can be defined on the basis of collections that define roles for users.
It would be nice if these access permissions could be made within the scope of the fields under the collection and the query results would be returned accordingly.Current:
privileges: [
{ resource: { db: "users", collection: "user" }, actions: [ "find"] },
}
Expected:
{ resource: { db: "users", collection: "user", field: "email" }, actions: [ "find"] },
3 votes -
Display Recovery time during restore process.
Team,
Currently Mongo DB restoration process not giving any recovery time estimate when restore process start and because of that we are not able to plan time window for other critical process to start which is depend on restore and not able to communicate exact time when system will be available.
Please include this feature in upcoming release.
4 votes -
Lock the document field (not the entire document)
Hi
according to this reference: https://www.mongodb.com/blog/post/how-to-select--for-update-inside-mongodb-transactionsWhen I lock a document with a field with a new ObjectID, the whole document is locked!
Idea :
Operations:
i have three fields : A , B , C
I locked fieldAwith new ObjectID in transactionT1.
i locked fieldBwith new ObjectID in transactionT2.Behaviors (high performance) :
- In transactionT2: if fieldAis updated,writeConflicterror occurs.
- In transactionT1: if fieldBis updated,writeConflicterror occurs.
- Outside of transactions: If fieldAis updated, it waits for …1 vote -
Improve the mongo query language
Sometimes I find Mongo query language as not put very well together, sometimes it feels like a patch job. It would be nice, if you could make you query language easier to reason about. It would be awesome, if you could introduce fluent style api builder instead of building bson documents.
1 vote -
Add functionality to specify the readConcern level at db.collection.findOne()
Add functionality to specify the readConcern at db.collection.findOne(). At the version 5.0.14 it's not supported.
1 vote -
Build MongoDB with PGO
I would like to see support for PGO (and even LLVM Bolt) in the upstream. Would be awesome if MongoDB will distribute PGO-optimized binaries, so the users will be able to see an additional performance boost "for free". At least describe to the users somewhere in the documentation, how they could achieve a boost for their own scenarios with PGO.
1 vote -
Combine reshardCollection+mongosynd idea to support a remote collection on a separate new cluster
Great for prod productivity and 99.999 SLA if mongo could support this,
for example,Given "mydb.mycoll" in current cluster being sharded with {zip:1} shard key
1/ New cluster: sh.shardCollection( "mydb.mycoll", {name:1, phone:1} )
2/ "Mongocopy" till mydb.mycoll in new and current cluster are synced.
Very much like how reshardCollection works now, but to a remote
mydb.mycoll on the new cluster, instead of the local coll
system.resharding.554c8995-2ec9-4bda-9401-a3ad475b9c8cThis is a combination of mongosync and reshardCollection in one.
Prod cluster is often very big and busy and requires no downtime with the
99.999 SLA (Service level agreement). Being able to reshardCollection
to…1 vote -
1 vote
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Release notes with urgency and risk
Provide MongoDB customers/users with an understandable release notes, especially for bugfixes.
What are the risks this bugfix release covers, what is its urgency.Right now, release notes are made of MongoDB Jira tickets, which are very detailed and refer to the implementation of MongoDB, and thus cannot be easily understood by end users.
As a suggestion, release notes could sum up the following data in a simple table:
- Nature of impact
-> data corruption: yes/no
-> downtime: of a single node / of the whole cluster / on a subset of requests / etc
- Context of impact…10 votes
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