How Can Concurrency Affect Replica Sets Primary?

1.	How Can Concurrency Affect Replica Sets Primary?
Answer» In replication, when MongoDB writes to a COLLECTION on the primary, MongoDB ALSO writes to the primary's OPLOG, which is a SPECIAL collection in the local database. THEREFORE, MongoDB must lock both the collection's database and the local database. In replication, when MongoDB writes to a collection on the primary, MongoDB also writes to the primary's oplog, which is a special collection in the local database. Therefore, MongoDB must lock both the collection's database and the local database.

Answer»

In replication, when MongoDB writes to a COLLECTION on the primary, MongoDB ALSO writes to the primary's OPLOG, which is a SPECIAL collection in the local database. THEREFORE, MongoDB must lock both the collection's database and the local database.

In replication, when MongoDB writes to a collection on the primary, MongoDB also writes to the primary's oplog, which is a special collection in the local database. Therefore, MongoDB must lock both the collection's database and the local database.

Discussion

No Comment Found

Related InterviewSolutions

Which Command Can Be Used To Provide Various Information On The Query Plans Used By A Mongodb Query?
Can You Run Multiple Javascript Operations In A Single Mongod Instance?
What Is Gridfs?
How Can Concurrency Affect Replica Sets Primary?
Can One Mongodb Operation Lock More Than One Databases? If Yes, How?
How Can You Isolate Your Cursors From Intervening With The Write Operations?
How Does Mongodb Provide Concurrency?
Can You Configure The Cache Size For Mmapv1? How?
Mention The Command To Check Whether You Are On The Master Server Or Not.?
How Does Journaling Work In Mongodb?