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

Andrew Kryczka 42733637e1 Sync CURRENT file during checkpoint (#4322 An error occurred ) ... Summary: For the CURRENT file forged during checkpoint, we were forgetting to `fsync` or `fdatasync` it after its creation. This PR fixes it. Differential Revision: D9525939 Pulled By: ajkr fbshipit-source-id: a505483644026ee3f501cfc0dcbe74832165b2e3		7 years ago
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checkpoint_impl.cc	Sync CURRENT file during checkpoint (#4322 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	Sync CURRENT file during checkpoint (#4322 An error occurred )	7 years ago