e40b04e9fa
Summary: Failure to create the lock file (e.g. out of space) could prevent future LockFile attempts in the same process on the same file from succeeding. Also added DEBUG code to fail assertion if PosixFileLock is destroyed without using UnlockFile (which is a risk because FileLock is in the public API with virtual destructor). Pull Request resolved: https://github.com/facebook/rocksdb/pull/8747 Test Plan: test added Reviewed By: ajkr Differential Revision: D30732543 Pulled By: pdillinger fbshipit-source-id: 4c30a959566d91f778d6fad3fbbd5f3941b097c1