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Combine reshardCollection+mongosynd idea to support a remote collection on a separate new cluster

Great for prod productivity and 99.999 SLA if mongo could support this, for example, Given "mydb.mycoll" in current cluster being sharded with {zip:1} shard key 1/ New cluster: sh.shardCollection( "mydb.mycoll", {name:1, phone:1} ) 2/ "Mongocopy...

Guest about 3 years ago in Replication & Sharding 0 Submitted

1 VOTE

UTF 16 and UTF 32 support

Currently MongoDB only support UTF 8 strings but it will be great if there is a configuration to change UTF 16 or UTF 32.

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

1 VOTE

Support $documents on shards

The new aggregation operator $documents cannot be used together with $merge in a sharded cluster, you get an error: ``` db.aggregate([ { $documents: [ { _id: ObjectId("6616b08a610fab3e84d2d4ee"), a: 'foo', shardKey: 1 }, ] }, { $merge: { in...

Wernfried Domscheit over 3 years ago in Replication & Sharding 0 Submitted

1 VOTE

Raise an error when "majority" writes not possible

This topic is related to https://www.mongodb.com/docs/v6.0/tutorial/mitigate-psa-performance-issues/ in a PSA ReplicaSet configuration. When you try to execute a command with writeConcern `{w: "majority"}` in a three-member Primary-Secondary-Arbi...

Wernfried Domscheit over 3 years ago in Replication & Sharding 0 Submitted

1 VOTE

BSON::Proxy Proxy content from/to another collection

I would like a mongodb data type, called BSON::Proxy # not indexable or searchable Which would hold the value of another collection & id. IE: BSON::Proxy({database: "this_one", collection: "blobs", _id: "123"}) This would allow my code to...

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

1 VOTE

Change how document size is calculated

Disclaimer: I'm aware that this is a pretty big feature request. Currently a document has a max size of 16 mb. I'm not suggesting changing that. However, I'm suggesting changing how that size is calculated. I'm designing a database in which docu...

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

1 VOTE

URL Decode `readPreferenceTags`

If a url encoded value is set to readPreferenceTags it will be ignored causing for instance connecting to analytics node impossible from tooling that correctly encodes the urls. It can look like this for instance: `readPreferenceTags=nodeType:ANA...

Guest about 4 years ago in Replication & Sharding 0 Submitted

1 VOTE

Please report mixed-type numeric _id fields in $merge stage error

Posting this idea at the request of one of the Jira users. You can find more technical details about this in the Jira issue: https://jira.mongodb.org/browse/SERVER-61613 The gist of it is that I may have two collections, `b2` and `b3`, that are ...

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

1 VOTE

Shard Drain/ Removal issue

If we have more shards, and if want to remove few shards (more than 1), we use below command. db.adminCommand( { removeShard : "Shardname" } ) Ex, if I have Shard 1, 2, 3, 4, 5. want to remove Shard 2 & 5. I want to remove one shard at a ...

Guest over 4 years ago in Replication & Sharding 0 Submitted

1 VOTE

Mongo replicaset init sync issue

When we have large size mongo replica set, we may have to take out each nodes for maintenance for few hrs or days. In that case we have to increase size of Oplog to keep several days of transactions to resync nodes after maintanance. If the RS h...

Guest over 4 years ago in Replication & Sharding 0 Submitted

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