Database
272 results found
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Kafka audit event streaming
Provide Kafka Topic as a write target for database auditing and database message logging.
https://docs.mongodb.com/manual/core/auditing/
Auditing is currently limited to a local and editable JSON/BSON file or the system console log.
The SYSLOG is not recommended by MongoDB. "The syslog message limit can result in the truncation of the audit messages. The auditing system will neither detect the truncation nor error upon its occurrence."5 votes -
Automatic Indexes
MongoDB can already suggest useful indexes. Why not take the next step and allow MongoDB to autonomously create and manage indexes. Ideally it will automatically maintain the indexes over time as the structure and usage of the database changes.
3 votes -
More verbose information about compact failures in logs
Recently we had a compact operation fail, and the mongod logs stated this was due to "eviction pressure" on the server. We have learned that this is a failsafe mechanism built into the compact command, but we would like to have a more verbose explanation of this failure mode in the logs to better understand why it failed and steps to remediate the issue.
1 vote -
Add Event Stream Features (Apache Kafka, NATS Streaming)
I thought it would be great if mongodb can support an event streaming(event bus) feature.
Existing popular event streaming services(AWS Kinesis, NATS Streaming, Apache Kafka) can persist data which is somewhat like a database.Its great for debugging, data logging for later uses such as machine learning. Since I can see the full flow of the data and its changes.
But there are two downside with most even streaming services.
1. Its very difficult to query the data.
2. "Eventual Consistency" issue when dealing programmatic errors(bugs). Most event streams have this nice feature, which keeps sending the same event to…2 votes -
Elevate hidden replica to a voting member when quorum is lost for a Replica Set
The MongoDB engine should allow for hidden members in a replica set to be automatically elevated to a voting member. When quorum is lost and can't be met, the hidden replica is automatically reconfigured to a voting member to obtain quorum.
When the failed voting member comes back online and catches up the hidden replica is demoted back to a normal hidden member.7 votes -
partial text search
we've already seen a full text search and it will be awesome if you manage to implement partial version :)
31 votes -
MongoDB emulator
From a user - A MongoDB in-memory emulator would help development against MongoDB in a completely isolated way. They deploy self contained applications for developers that don't have any external connections other than MongoDB. The customer found a community project, fongo, that does this, but it is not supported and trails development by a few versions. https://github.com/fakemongo/fongo. I would be happy to connect the users with relevant project managers
1 vote -
Collection Comments
I would like the ability to attach comments to a collection so that other people using the data can get some understand of context or important Readme/FAQ that I would need to share.
5 votes -
Performance problem with compound index using doubles, with range filtering
It looks like there may be a problem when using doubles in a compound index and using range-test filters against all of them in a query.
The problem we see from the explain plans is that far more keys are being examined that there should be and this leads to poor performance.
If we switch to using a similar setup but with integers instead, we don’t see the problem.See the second part of this ticket for full details
https://support.mongodb.com/case/00659614
We have a document that looks like this –
{
"id" : ObjectId("5e2ab24eca314f10b486d827"),
"attributes" : [
{
"attributeCode" :…2 votes -
Too many keys in 2dsphere index when used on geoJson within arrays
Mongo support have asked me to raise this bug as an improvement idea because they see it as an edge case.
The issue is here and includes more details:https://support.mongodb.com/case/00659614
In summary, if you have a geoJson sub document that sits within an array, and you index it using the 2dspehere index, you get keys duplicated for every element in the array.
For example, if you have geoJson that represents a big 4,500 vertex polygon, and you put it within an array element, if the array has only one element I see 20 keys generated, which is good. But if…
2 votes -
Password enforcement without LDAP
Enforce complex password policy
Enforce password expiration
Enforce password history20 votes -
Periodic large bulk insert/update all or nothing with instant switchover
Provide the ability for orgs to update things like large reference data sets periodically. E.g. an ecommerce site updates its product inventory every night at midnight, where even though the inserts or updates may take say 10 minutes to run and complete, the applications do not see the changes until the bulk update finishes. The problem otherwise is currently, the ecommerce app, in this example, may be reading product data partly from yesterday's data and partly from today's changed data, during the 10 minute run. For consistency the application would ideally want to see data from either before the bulk…
1 vote -
Support for wildcards in permission parameters
Support for wildcards or maybe even regular expressions in the database/collection name of a permission for a custom role.
We have a multi tennant setup, by storing every customer's data in its own database on the cluster. The applications we build span those databases, but every application has it's own permissions on a collection name bases.
instead of granting "find" permission to the "products" collection of all databases like "mongodbcom" and "somecompanycom", it would be nice if we coulf configure it like "find" permission to the "products" collection on the database matching /^[a-z]+_[a-z]+$/
1 vote -
Making Elections Faster.
Election is an expensive operation. We can avoid the elections if we can enforce some priority-based ordering on who shall become primary if the current primary fails.
Specifically, we can keep a node with second highest priority in the data center of the most preferred primary. Usually, the network failures within the data centers are less probable than across the data centers. So, it is reasonable to believe that if the second preferred member loses the contact with current primary, it is the primary node which has failed and not the network. As a supplement, we can also have redundant…2 votes -
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.
4 votes -
Include the _ids of existing documents in BulkWriteResult when performing upserts
When performing a bulk operation, it is possible to obtain the _ids of upserted documents via BulkWriteResult. For example:
db.getCollection("test").find({})
db.test.drop()
var bulk = db.test.initializeUnorderedBulkOp();
bulk.find({name: "huey"}).upsert().updateOne({name: "huey"});
bulk.execute();
```The BulkWriteResult contains the upserted _id:
BulkWriteResult({
"writeErrors" : [ ],
"writeConcernErrors" : [ ],
"nInserted" : 0,
"nUpserted" : 1,
"nMatched" : 0,
"nModified" : 0,
"nRemoved" : 0,
"upserted" : [
{
"index" : 0,
"_id" : ObjectId("5ec77b5cc4a955ce03a4cd2e")
}
]
})However, when a document already exist, the _id is not returned:
db.test.find()
var bulk = db.test.initializeUnorderedBulkOp();
bulk.find({name: "huey"}).upsert().updateOne({name: "huey", outfit: "red"});
bulk.find({name: "luey"}).upsert().updateOne({name: "luey", outfit:…4 votes -
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.
4 votes -
More complex balancer windows for sharded clusters
Currently we can define a single balancer window which is applied for every day of the week. It would useful to extend this with, for example:
- multiple windows per day (e.g. 2-4am and 9-11pm)
- custom windows for days of the week (e.g. Sat 5pm-midnight, Sunday 0-24)
11 votes -
Notification Alert
Whenever a document is created within a collection to send a email to the account holder.
1 vote -
Allow kill connections
Kill session commands only stop current activities on DB, but not closing/dropping connections (connections still remain open in $listSessions).
It´d be useful to be able to close opened connections in situations where too many sessions have been opened incorrectly or not closed.16 votes
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