35dfbd58dd
Summary: Garbage collect entries from old_commit_map_ when the corresponding snapshots are released. Closes https://github.com/facebook/rocksdb/pull/3247 Differential Revision: D6528478 Pulled By: maysamyabandeh fbshipit-source-id: 15d1566d85d4ac07036bc0dc47418f6c3228d4bf