We just added a node to our replica set. After the node's state switched to SECONDARY, I do

use obs

on both the PRIMARY node and the new SECONDARY.

               PRIMARY    SECONDARY
"collections" :  19          18
"views" :        0            0
"objects" :    70926        70409

Why are numbers of objects and collections different?

1 Answer 1


OK we found why there is a discrepancy.

We were able to list the collections on the secondary node with

show collections

From there, I realized the extra collection on the primary was system.profile (I'd forgotten I'd turned on the profiler) and it's 517 documents accounted for the different object counts from db.stats()

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.