Question : We are developing a prototype for a BIG data product. We have almost 2 billion records. We have […]
Tag: sharding
Sizing a MongoDB shard?
Question : I am in the process of planning a MongoDB deployment, this will be my first to production and […]
MongoDB — Failed global initialization: Failed to open “/var/log/mongodb/mongod-config.log”
Question : I’m trying to setup the config servers for mongodb sharding. I created a specific config file that is […]
Add mongodb cluster to a replica set
Question : I have a database db on mongodb server s0 with collection coll which is not sharded. To shard […]
Is a update-only-once-row table worth sharding?
Question : I have a big MySQL 5.6 Inno DB table that contains user’s request. A table row updates only […]
Mongo large chunks will not split
Question : I had a 3 shard set up, and ran out of capacity, so I added 3 more shards. […]
Must data be evenly distributed among Mongo shards?
Question : According to this article: https://www.mongodb.com/blog/post/on-selecting-a-shard-key-for-mongodb. Assuming I have my schema as: { time_posted: …, userid: …, content: … […]
UUID/GUID field and shards
Question : I am planning on using UUID field for storing items which can have a parent item. I am […]
MongoDB – temporarily turn shard to standalone for local user creation
Question : Following question Mongodb sharded cluster backup user issue I have a sharded mongodb cluster, with 4 shards, and […]
MongoDB Hashed Shard Keys Selection
Question : I have a DB which holds very simple documents called “Item”: {_id:<ObjectId>, playerId:int, isRead:bool, content:string} containing about 80M […]