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MONGODB QUESTIONS

Why do we need an 'arbiter' in MongoDB replication?
Why do we need an 'arbiter' in MongoDB replication?
Any of those help I created a spreadsheet to better illustrate the effect of Arbiter nodes in a Replica Set.
TAG : mongodb
Date : November 28 2020, 01:01 AM , By : Yvonne Doll
How to create tree like compound index in mongodb
How to create tree like compound index in mongodb
hope this fix your issue You can't control how MongoDB buckets its indices. And likely you don't need to. A simple index on the pop field is likely good enough.But when you really want to try to get some extra performance by taking advantage of the f
TAG : mongodb
Date : November 27 2020, 01:01 AM , By : Head Geek and Byte C
Call stored function in mongodb
Call stored function in mongodb
this one helps. Consider the following example from the mongo shell that first saves a function named echoFunction to the system.js collection and calls the function using db.eval():
TAG : mongodb
Date : November 25 2020, 07:22 PM , By : Cramer14
Mongodb update deeply nested subdocument
Mongodb update deeply nested subdocument
I hope this helps . Unfortunately, you can't use the $ operator more than once per key, so you have to use numeric values for the rest. As in:
TAG : mongodb
Date : November 25 2020, 01:01 AM , By : 1101
how do non-ACID RethinkDB or MongoDB maintain secondary indexes for non-equal queries
how do non-ACID RethinkDB or MongoDB maintain secondary indexes for non-equal queries
this one helps. This is a great question.RethinkDB always stores secondary indexes on the same host as the primary index/data for the table. Even in case of joins, RethinkDB brings the query to the data, so the secondary indexes, primary indexes, and
TAG : mongodb
Date : November 24 2020, 03:41 PM , By : Steve Lance
How to set "arbiterOnly" to an existing node in a replicaset, from MongoDB MMS portal?
How to set "arbiterOnly" to an existing node in a replicaset, from MongoDB MMS portal?
I hope this helps . You can't directly "convert" a secondary to an arbiter through replica set reconfiguration. A secondary is a data-bearing node whereas an arbiter is not, so the step of removing a secondary (and dropping data) needs to be explicit
TAG : mongodb
Date : November 23 2020, 01:01 AM , By : WayTech
MongoDB: Using $geoIntersects or $geoWithin with $near in one query
MongoDB: Using $geoIntersects or $geoWithin with $near in one query
around this issue This requires an aggregate pipeline. As per mogodb doc for $geoNear, You can only use $geoNear as the first stage of a pipeline. The aggregate function has an entry for an additional query which is where the polygon query will be us
TAG : mongodb
Date : November 22 2020, 01:01 AM , By : user2954278
[METEOR $addToSet]Cannot insert into object '$addToSet' is empty
[METEOR $addToSet]Cannot insert into object '$addToSet' is empty
hope this fix your issue For me it looks like you didnt add field profile.photos at register. You do it with method Accounts.onCreateUser It looks like this
TAG : mongodb
Date : November 22 2020, 01:01 AM , By : user2954231
How to increment a field in mongodb?
How to increment a field in mongodb?
I hope this helps . As the error indicates, on the client you can only perform an update with a simple _id selector. I'd recommend using a method with a slight modification to your code:
TAG : mongodb
Date : November 21 2020, 01:01 AM , By : user2953527
"For" loop with meteor
"For" loop with meteor
around this issue Inside the each block, replace {{number}} with {{this}}.In your js file, number should be defined as an array like so:
TAG : mongodb
Date : November 18 2020, 03:49 PM , By : user2952027
howto route with collection's param in iron router Meteor JS
howto route with collection's param in iron router Meteor JS
I wish this helpful for you It is common way to route collection News as below using _id params,
TAG : mongodb
Date : November 18 2020, 03:49 PM , By : Amir Mamaghani
Connect to MongoDB on Azure (from client)
Connect to MongoDB on Azure (from client)
Does that help I'm assuming this will be moved to ServerFault. In the meantime: There are two things required for external access, if you just spun up a new MongoDB instance: In mongod.conf, the default configuration for bind_ip is 127.0.0.1, which m
TAG : mongodb
Date : November 17 2020, 11:58 AM , By : Alberto Marullo
Aggregating filter for Key
Aggregating filter for Key
wish help you to fix your issue Trying to query structures like this does not work well. There are a whole whole host of problems with modelling like this, but the most clear problem is using "data" as the names for "keys".
TAG : mongodb
Date : November 17 2020, 11:55 AM , By : Robin
Powershell Mongodb Authentication
Powershell Mongodb Authentication
wish of those help Here is a snippet of MongoDb authentication from Powershell.I use here MongoDB C driver (have a look here)
TAG : mongodb
Date : November 17 2020, 11:52 AM , By : Cindy
Consequences of using $unwind on nested arrays?
Consequences of using $unwind on nested arrays?
I wish did fix the issue. It is always a good idea to be cognizant of memory resources when $unwinding because of the replication of data that occurs.Using $match to narrow down the results to the specific documents you are looking for is of course o
TAG : mongodb
Date : November 17 2020, 01:00 AM , By : user2949585
Set operation with condition
Set operation with condition
Hope that helps Unfortunately, MongoDB queries are not flexible enough to trigger an post query event. You could do it in two ways, but both involve firing more than a single query:The first approach, involves:
TAG : mongodb
Date : November 17 2020, 01:00 AM , By : liron
How to create database schema for multiuser application (No SQL)
How to create database schema for multiuser application (No SQL)
hope this fix your issue As far as I know mongo locks documents. But the whole idea behind having a nosql database is not to create different tables/schema, your application can maintain the relationship etc. User and user info should be in the same
TAG : mongodb
Date : November 14 2020, 04:51 PM , By : user2948466
MongoDB data files created in wrong directory while changing oplog size
MongoDB data files created in wrong directory while changing oplog size
This might help you The location of your files in MongoDB 2.4 will be affected by the directoryperdb setting in your MongoDB configuration file:Run the command below to see if you have set the flag directoryperdb in your configuration file.
TAG : mongodb
Date : November 14 2020, 04:48 PM , By : sam
mongodb , wildcard in $in
mongodb , wildcard in $in
help you fix your problem I have a mongodb query where i want to get documents if a field has particular value. , I think this is logically consistent behavior for $in. The query
TAG : mongodb
Date : November 14 2020, 04:48 PM , By : user148082
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