We are getting duplicates of the same records returned from a query. I suspect this is due to a failed chunk migration.

We are running 2.4.8 and there is no chunk cleanup option in this version.

We are not able to serve all queries with the primaries because we are bound by CPU currently.

Is there a fix for this issue in 2.4.8 or an option we can use until we are able to upgrade to 2.6?

I believe this is being addressed in 2.8 as the secondaries are aware of the ranges and will take duplicates out before returning the set?