Question : I set up a new standalone mongo2.6 and copy one folder(database) from another machine to its data path. […]
Category: MongoDB
How can i convert all object Ids to string using query in MongoDB, note the structure is complex, So can’t use $toString in $addFields and $project?
Question : I have a really deep-nested JSON object generated by aggregation query, but I want to convert all the […]
MongoDB Balancer:move data inside replication set or across replication set?
Question : After reading the document of mongodb on the balancer topic , I have two questions: 1.If I set […]
MongoDB hashtable namespace index max chain reached error after machine crash
Question : I have a database machine running standalone MongoDB v2.6.12 on Ubuntu 14.04. It is running well until the […]
MongoDB service not starting on RedHat – missing ‘service_uri’
Question : I’m on a Red Hat Enterprise Linux Client release 5.4 (Tikanga) machine I created my /etc/yum.repos.d/10gen.repo like this: […]
Mongodb sharded cluster backup user issue
Question : We’re using a simple python script to backup our mongodb cluster. the script connects to each mongod instance […]
MongoDB syncingTo change
Question : I have a 3 members replica set version 2.6.1 with following configuration “_id” : 0, “host” : “10.125.16.22:30000”, […]
i need clarifications on MongoDB
Question : I have a few questions, hoping I can get answers. what does it mean when the Mongodb said: […]
Chunk Size is shown as 1 KB in mongo db logs even it is set to 300 MB [closed]
Question : Closed. This question is off-topic. It is not currently accepting answers. Tip of the iceberg – the question […]
Write Locks in Mongo DB
Question : I read somewhere that MongoDB holds db level write lock, does this mean that when someone updates any […]