Database

Tiered TTL for time series collection based on granularity

Currently time series collections have a single TTL across all inherent granularities. It would be great to specify a TTL for each granularity. For example: For seconds: 1 week For hours: 1 month Others: never Course information should be held l...

Pieter Jordaan about 5 years ago in Database 0 Submitted

1 VOTE

Sorting support on Array fields.

Presently, I'm attempting to arrange(sort) the documents within my collection based on a key nested within an array object. However, sorting isn't functioning as expected in this scenario. A proper explanation with example is here what I mean. ht...

Guest over 2 years ago in Querying & Aggregations 0 Submitted

2 VOTE

support $lookup for update aggregation

We frequently denormalise either full documents or subsets to different documents in order to speed up reading, create indexes or paginate/sort on fields. Consider a user collection and a task collection, if a task can be assigned to the user, it...

Guest about 5 years ago in Querying & Aggregations 2 Submitted

2 VOTE

Support for MongoDB Server on Ubuntu 21.04.

Per the [MongoDB Server Supported Platforms Matrix](https://docs.mongodb.com/manual/installation/#supported-platforms) support for Ubuntu 21.04 is not yet available. We would like to see the currently supported MongoDB Server versions available on...

Charles Merrill about 5 years ago in Database 0 Submitted

2 VOTE

Provide a KRB5_KTNAME setParameter or other config setting

The Kerberos keytab file is specified in the KRB5_KTNAME environment variable. Could a setParameter or other config file setting "krb5KtName" be provided to allow this to be set?

Guest about 5 years ago in Database 0 Submitted

2 VOTE

Ability to replicate the data within a cluster to another cluster

Two different scenarios. One scenario is to have a DR cluster. 2 independant clusters that are one way synced. As of right now, a custom CDC solution (custom code + Kafka) is needed to achieve this. Another is because of latency and the requirem...

Guest about 5 years ago in Replication & Sharding 0 Submitted

2 VOTE

Record running queries at the time of a failover

I recently observed some failovers in a replica set that may have been related to long-running queries. However, since these queries happened only sporadically, it was hard to track them down. Since the queries didn't finish, they weren't present ...

Guest about 5 years ago in Database 0 Submitted

2 VOTE

Create and use db links in Mongodb

Allow Mongodb to access an external database for: 1.select identifiers on an external rdbms (ex: postgres, sqls, oracle, ...) 2.use these identifiers to perform aggregations in Mongodb Currently, it is necessary to use a third-party tool that c...

Guest about 5 years ago in Database 0 Submitted

1 VOTE

JSON

I'm converting a lot of data for export from MongoDB -> Postgresql I would like an aggregation function to convert an object to JSON { "$addField": { "_id": true, "json": { '$convert': { 'input': '$subdocument', 'to': 'json', # // Id...

Guest over 2 years ago in Querying & Aggregations 0 Submitted

1 VOTE

Self-Managed Computed Collections

This feature would enable MongoDB to automatically generate common patterns by computing entire collections. A particularly useful application would be the ability to identify duplicate fields within a collection and create a computed collection t...

Guest over 2 years ago in Database 0 Submitted

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