Database

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Query Planner needs a timeOut set as a Database parameter.

Query Planner needs a timeOut set as a Database parameter. We see App queries timing out on Query planner taking >1 sec. Whilst this can be avoided by setting maxTimeMS at client end - this is more of a setting for the overall query and not ju...

Guest about 3 years ago in Database 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...

Guest over 1 year ago in Data Modeling & Indexing 0 Submitted

2 VOTE

We need to be able to use $[<identifier>] and "$setOnInsert" in the same command

I want to be able to have a maintain array of counters for a user through a single update statement. If the document containing array of counters does not exist, I want to add it. If it does exist, I want to increment the counter For example, thi...

Guest about 3 years ago in Database 0 Submitted

2 VOTE

hint support for $graphLookup

Currently you can supply a `hint` to the `aggregation` call in order to tell MongoDB to use a specific index for the initial `$match`. But there is currently no way to specify which index to use for a `$graphLookup` later in the pipeline. I would...

Guest about 3 years ago in Querying & Aggregations 0 Submitted

3 VOTE

updateMany limit

When porting an application backend from an RDBMS to MongoDB, we've spoken to two people who've are looking for a way to specify a limit on the number of documents in .updateMany(). I understand the behavior cannot be defined on a sharded cluster,...

Guest almost 5 years ago in Database 1 Submitted

2 VOTE

Add numerically-ordered index feature which forces a field to maintain ordering

I would like MongoDB to add better support for ordered lists across documents in a collection. This feature would allow the user to designate a field such as "position", and the DB would ensure the values of that field across documents remain in a...

Guest about 3 years ago in Data Modeling & Indexing 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 1 year ago in Querying & Aggregations 0 Submitted

3 VOTE

Option to prohibit a non-voting member from becoming a sync source of a voting member

Hi, Our proposition in a few words: add a replica set option to allow chained replication but with the following exception: a non-voting member cannot become a sync source of a voting member under any circumstance. This proposition would allow c...

Guest almost 5 years ago in Database 0 Submitted

1 VOTE

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Guest over 1 year 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. *...

Guest over 3 years ago in Replication & Sharding 0 Submitted

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