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

Andrew Kryczka 0a5b16c7c5 Cleanup staging directory at start of checkpoint (#4035 An error occurred ) ... Summary: - Attempt to clean the checkpoint staging directory before starting a checkpoint. It was already cleaned up at the end of checkpoint. But it wasn't cleaned up in the edge case where the process crashed while staging checkpoint files. - Attempt to clean the checkpoint directory before calling `Checkpoint::Create` in `db_stress`. This handles the case where checkpoint directory was created by a previous `db_stress` run but the process crashed before cleaning it up. - Use `DestroyDB` for cleaning checkpoint directory since a checkpoint is a DB. Closes https://github.com/facebook/rocksdb/pull/4035 Reviewed By: yiwu-arbug Differential Revision: D8580223 Pulled By: ajkr fbshipit-source-id: 28c667400e249fad0fdedc664b349031b7b61599		7 years ago
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checkpoint_impl.cc	Cleanup staging directory at start of checkpoint (#4035 An error occurred )	7 years ago
checkpoint_impl.h	Cleanup staging directory at start of checkpoint (#4035 An error occurred )	7 years ago
checkpoint_test.cc	fix memory leak in two_level_iterator	7 years ago