a960287dee
Summary: Two changes: 1. Prevent static variables in a header file 2. Add "override" keyword when virtual functions are overridden. Pull Request resolved: https://github.com/facebook/rocksdb/pull/6137 Test Plan: Build db_stress with or without LITE. Differential Revision: D18892007 fbshipit-source-id: 295356427a34473b23ed36d6ed4ef3ae35a32db0