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

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Yanqin Jin fb09ef05dc Attempt to recover from db with missing table files (#6334) ... Summary: There are situations when RocksDB tries to recover, but the db is in an inconsistent state due to SST files referenced in the MANIFEST being missing. In this case, previous RocksDB will just fail the recovery and return a non-ok status. This PR enables another possibility. During recovery, RocksDB checks possible MANIFEST files, and try to recover to the most recent state without missing table file. `VersionSet::Recover()` applies version edits incrementally and "materializes" a version only when this version does not reference any missing table file. After processing the entire MANIFEST, the version created last will be the latest version. `DBImpl::Recover()` calls `VersionSet::Recover()`. Afterwards, WAL replay will *not* be performed. To use this capability, set `options.best_efforts_recovery = true` when opening the db. Best-efforts recovery is currently incompatible with atomic flush. Test plan (on devserver): ``` $make check $COMPILE_WITH_ASAN=1 make all && make check ``` Pull Request resolved: https://github.com/facebook/rocksdb/pull/6334 Reviewed By: anand1976 Differential Revision: D19778960 Pulled By: riversand963 fbshipit-source-id: c27ea80f29bc952e7d3311ecf5ee9c54393b40a8		5 years ago
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composite_env_wrapper.h	Cache result of GetLogicalBufferSize in Linux (#6457)	5 years ago
env.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
env_basic_test.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
env_chroot.cc	Cache result of GetLogicalBufferSize in Linux (#6457)	5 years ago
env_chroot.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
env_encryption.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
env_hdfs.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
env_posix.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
env_test.cc	Add more unit test coverage to MultiRead (#6452)	5 years ago
file_system.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
fs_posix.cc	Get block size only in direct IO mode (#6522)	5 years ago
io_posix.cc	Cache result of GetLogicalBufferSize in Linux (#6457)	5 years ago
io_posix.h	Cache result of GetLogicalBufferSize in Linux (#6457)	5 years ago
io_posix_test.cc	Cache result of GetLogicalBufferSize in Linux (#6457)	5 years ago
mock_env.cc	Attempt to recover from db with missing table files (#6334)	5 years ago
mock_env.h	Attempt to recover from db with missing table files (#6334)	5 years ago
mock_env_test.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago