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Support Two Array Fields in Compound Indexes

Hi, I've come across a lot of use cases where the business logic has demanded unique constraints on 1-2 fields that have been modeled as arrays on documents. The cases that only contain a single array field is already taken care of using unique i...

Guest over 3 years ago in Data Modeling & Indexing 0 Submitted

1 VOTE

Scheduled stepdown for smoother primary election

Stepdown is a great tool that allows us to keep clusters operating smoothly. We use it for example when we want to perform some maintenance work on the host where the primary is currently running, to perform a rolling upgrade, and in many other ca...

Guest almost 2 years ago in Replication & Sharding 0 Submitted

3 VOTE

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.

Guest almost 6 years ago in Data Modeling & Indexing 1 Submitted

1 VOTE

allow mongosync to migrate few field from source to destination for collection in database

right now mongosync will migrate all the fields from source to destination based on filter or non filter setting but there is no way to move few field out of all field for all document to migrate few field from source to destination for collect...

Dasharath Dixit almost 2 years ago in Replication & Sharding 0 Submitted

2 VOTE

Use dedicated interface for replication and balancing

Like many other big database system, MongoDB may support to specify dedicated interfaces for replication and/or for the balancer (sharding) Currently you can configure replication sets and shards members only by single hostname/IP-Address, i.e. *...

Wernfried Domscheit almost 4 years ago in Replication & Sharding 0 Submitted

2 VOTE

Make it clear an index not on present on all shards

We recently had an issue where an index did not get created on all shards. When we ran getIndexes() on mongos it reported the index was present. So we dropped another redundant index thinking all would be well - it was not. We had serious performa...

Guest almost 4 years ago in Data Modeling & Indexing 0 Submitted

1 VOTE

TTL index activity statistics

Dear all, Presently, there is no visibility or tracking of TTL index activity: no data available to the user to see how much data and how often has been deleted. I suggest having a separate “dictionary” collection with statistics for all TTL inde...

Marina Sirota almost 2 years ago in Data Modeling & Indexing 0 Submitted

1 VOTE

array length as computed to be indexed

in some cases, I need to filter only docs with specific (or range of) sizes of nested arrays. it will be good if I can configure 'automatic index' to keep the length of the array, based on the field name I will provide to the index, and then I can...

Guest over 2 years ago in Data Modeling & Indexing 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 over 4 years ago in Replication & Sharding 0 Submitted

1 VOTE

Support indexes on single array elements (e.g. "MyArray.0")

Currently, if I create an index on an array field and specify an element number ("MyArray.0"), the system still indexes the whole array as normal. Normally, this might increase the index size but at least it's still useful when querying MyArray.0...

Guest over 2 years ago in Data Modeling & Indexing 0 Submitted

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