Fix missing return and Mongo3 support for index_miss_ratio option #162
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Hello,
In Mongo3, the server status output no longer includes the workingSet, indexCounters, and recordStats sections.
So the index_miss_ratio function is broken.
See : http://docs.mongodb.org/manual/reference/command/serverStatus/#output
This patch disable this action when using mongo3 (similar to the lock action) and fix the return code.
Olivier