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

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Igor Canadi 8a9fca2619 Better error handling in BackupEngine ... Summary: Couple of changes here: * NewBackupEngine() and NewReadOnlyBackupEngine() are now removed. They were deprecated since RocksDB 3.8. Changing these to new functions should be pretty straight-forward. As a followup, I'll fix all fbcode callsights * Instead of initializing backup engine in the constructor, we initialize it in a separate function now. That way, we can catch all errors and return appropriate status code. * We catch all errors during initializations and return them to the client properly. * Added new tests to backupable_db_test, to make sure that we can't open BackupEngine when there are Env errors. * Transitioned backupable_db_test to use BackupEngine rather than BackupableDB. From the two available APIs, judging by the current use-cases, it looks like BackupEngine API won. It's much more flexible since it doesn't require StackableDB. Test Plan: Added a new unit test to backupable_db_test Reviewers: yhchiang, sdong, AaronFeldman Reviewed By: AaronFeldman Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D41925		9 years ago
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backupable_db.cc	Better error handling in BackupEngine	9 years ago
backupable_db_test.cc	Better error handling in BackupEngine	9 years ago