Database

Parallelize unionWith

Today $unionWith aggregation command is executed sequentially. EG first we query collection A and then collection B and then the union occurs. The process should be parallelized so the query part will run in parallel while the union will be done a...

Guest over 2 years ago in Performance & Optimization 0 Submitted

2 VOTE

Preserve field order in $merge

Filed on behalf of https://jira.mongodb.org/browse/SERVER-63853: A variety of formats require strict adherence to the sequence of fields, such as bioinformatics Files of such formats are often very large and contain nested structures, so it is c...

Guest over 4 years ago in Database 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 over 2 years ago in Replication & Sharding 0 Submitted

1 VOTE

Write parts of database engine in ZIG

Zig is a zero-dependency, drop-in C/C++ compiler that supports cross-compilation out-of-the-box. Implementing some parts of MongoDB database engine core in ZIG might brings some performance improvements. https://ziglang.org/

Guest over 2 years ago in Database 0 Submitted

1 VOTE

Add Relaxed mode support for the $out operator

Add Relaxed mode support for the $out operator. *and include as option in the existing drivers

Guest over 2 years ago in Querying & Aggregations 0 Submitted

1 VOTE

Aggregations should allow an empty sort stage instead of returning an error

When you run an aggregation pipeline that contains an empty sort stage (like `{"$sort": {}}`) MongoDB returns the error message "$sort stage must have at least one sort key". It would be really helpful if such a stage would work and simply not app...

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

2 VOTE

The ability to perform a quick rollback or rewind of the database

This is along the lines of a flashback, to a previous point in time say from a very impacting change to data.. A large delete or data modification event. This avoids the need to take a complete outage for hours and hours restoring TBs of data and ...

Guest almost 5 years ago in Database 0 Submitted

2 VOTE

Support for converting between UUID and String

It would be nice to have UUID support for $convert and $toString functions - and maybe also having a new $toUuid function added. We have documents with UUIDs stored as UUIDs, and others where they are stored as Strings - and need to $lookup a doc...

Guest about 5 years ago in Database 0 Submitted

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