Summary: We introduced a new Comparator for timestamp in user keys. In the sst_dump_tool by default we use BytewiseComparator to read sst files. This change allows us to read comparator_name from table properties in meta data block and use it to read. Pull Request resolved: https://github.com/facebook/rocksdb/pull/9491 Test Plan: added unittests for new functionality. make check   Reviewed By: riversand963 Differential Revision: D33993614 Pulled By: satyajanga fbshipit-source-id: 4b5cf938e6d2cb3931d763bef5baccc900b8c536