Question

To terminate an ongoing index build, use the __________ method in the mongo shell.

(a) db.currentOp()

(b) db.killOp()

(c) db.removeOp()

(d) all of the mentioned

This question was posed to me in final exam.

My doubt is from Index Management in section Index/Indexing Concepts of MongoDB

Answer 1

Correct choice is (b) db.killOp()

The explanation is: For index builds, the effects of db.killOp() may not be immediate and may occur well after much of the index build operation has completed.