fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph

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Affan Dar 229e6fbe0e Adding DB::GetCurrentWalFile() API as a repliction/backup helper (#5765) ... Summary: Adding a light weight API to get last live WAL file name and size. Meant to be used as a helper for backup/restore tooling in a larger ecosystem such as MySQL with a MyRocks storage engine. Specifically within MySQL's backup/restore mechanism, this call can be made with a write lock on the mysql db to get a transactionally consistent snapshot of the current WAL file position along with other non-rocksdb log/data files. Without this, the alternative would be to take the aforementioned lock, scan the WAL dir for all files, find the last file and note its exact size as the rocksdb 'checkpoint'. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5765 Differential Revision: D17172717 Pulled By: affandar fbshipit-source-id: f2fabafd4c0e6fc45f126670c8c88a9f84cb8a37		6 years ago
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rocksdb	Adding DB::GetCurrentWalFile() API as a repliction/backup helper (#5765)	6 years ago