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Questions tagged [mongodb-4.2]

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Failed to start mongo.service on ubuntu 16.04 after update from 4.0 to 4.2

I'm trying to update my MongoDB installation from 3.6 to the latest version [4.4] on Ubuntu16.04 using apt-get. Going from 4.0 to 4.2 I faced a problem during the startup process after updating the ...
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2answers
49 views

Oplog incremental backup failure

I have scheduled oplog incremental dump using mongodump but it fails very often on majority of the servers. I have a shard cluster with around 200GB of oplog size defined and around 30-40 hours of ...
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0answers
19 views

MongoDB service showing down but db is running

I have a strange problem. I am using mongodb version 4.2.8 on Redhat Linux 7. Using Master Slave Replication. When I check mongodb service status (systemctl status mongod.service) it shows as failed(...
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1answer
31 views

Consequences of increase Oplog to large size

I'm trying to add a new member (m*-server: 4.2.7) in my replica set (m*-servers: 4.2.1), and it can't sync in time, after the initial sync it changes state to RECOVERING and have: (~ 4.3 - 6.31 hrs) ...
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0answers
25 views

MongoDb write performance degradation when increasing the number of concurrent writers

I was testing MongoDb write performance and noticed the following behaviour: when I increase the number of concurrent writers, the average time needed to write a document increases as well and ...
0
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1answer
511 views

MongoDB - Replication Oplog Window has gone below 1 hours

I'm working with MongoDB Atlas and I have a cluster of 3 with M30 and 100gb of storage. My current usecase is the following: - An user dispatches one search in my platform - The platform dispatches ...
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0answers
10 views

Remove all Node Descendants when remove Node parent in MongoDB

I have data in MongoDB as Tree Structures model. Here is my data: use TreeMongoParent; db.categoriesPCO.insert({_id:"Electronics",parent:null}); db.categoriesPCO.insert({_id:"Cameras_and_Photography",...
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1answer
10 views

Mongo assigning user permsions issue on docker

I'm using docker image mongo and I extend it to create a user and assign permissions on image build with such a line COPY init.sh /docker-entrypoint-initdb.d/ Here is the init.sh: #!/bin/bash set -e;...
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votes
1answer
119 views

Mongo slow startup after upgrade to 4.2.5

I have upgraded the MongoDB replica set, which consists of 3 members, from 4.0.11 to 4.2.5. After upgrading, startup lasts about 5 minutes. Before upgrading it was instant. It is related to ...
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0answers
11 views

MongoDB 4.2 Compact command not reclaiming space

In a replica set structure of 1.6 TB each node, we have deleted 400 GB of data out of 1.5 TB of consumed space. We ran compact command on secondary after making it standalone. But db size is not ...
0
votes
1answer
66 views

mongorestore - documents fail validation

The similar question already have been asked: How to validate a mongorestore But how to actually validate the documents in mongodumb and mongorestore? And also - can I see the documents that fail ...
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3answers
6k views

Failed to start of service MongoDB community4.2 using Homebrew in Mac OS Mojave 10.14

Error message while starting the mongoDB service. Error: Permission denied @ rb_sysopen - /Users/syedahmed/Library/LaunchAgents/homebrew.mxcl.mongodb-community.plist I installed/reinstall the ...
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1answer
274 views

MongoDB 4.2 using change streams with read concern majority disabled in a PSA deployment

I currently run a PSA (Primary, Secondary, Arbiter) deployment and thous only have two databearing nodes. In case of a databearing node going down, read concern majority prevented the change stream to ...