Summary:
Additionally I have extended the incomplete test added in the https://github.com/facebook/rocksdb/issues/6880.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6925

Reviewed By: ajkr

Differential Revision: D21869788

Pulled By: pdillinger

fbshipit-source-id: e9db80f259c57ca1bdcbc2c66cb938cb1ac26e48