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

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Zitan Chen 373d5ac485 BackupEngine verifies table file checksums on creating new backups (#7015) ... Summary: When table file checksums are enabled and stored in the DB manifest by using the RocksDB default crc32c checksum function, BackupEngine will calculate the crc32c checksum of the file to be copied and compare the calculated result with the one stored in the DB manifest before copying the file to the backup directory. After copying to the backup directory, BackupEngine will verify the checksum of the copied file with the one calculated before copying. This helps detect some rare corruption events such as bit-flips during the copying process. No verification with checksums in DB manifest will be performed if the table file checksum function is not the RocksDB default crc32c checksum function. In addition, If `share_table_files` and `share_files_with_checksum` are true, BackupEngine will compare the checksums computed before and after copying of the table files. Corresponding tests are added. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7015 Test Plan: Passed make check Reviewed By: pdillinger Differential Revision: D22165732 Pulled By: gg814 fbshipit-source-id: ee0e8cc397c455eba64545c29380b9d9853588ec		4 years ago
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backupable_db.cc	BackupEngine verifies table file checksums on creating new backups (#7015)	4 years ago
backupable_db_test.cc	BackupEngine verifies table file checksums on creating new backups (#7015)	4 years ago