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

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Yanqin Jin f287f8dc93 Fix a bug caused by secondary not skipping the beginning of new MANIFEST (#5472) ... Summary: While the secondary is replaying after the primary, the primary may switch to a new MANIFEST. The secondary is already able to detect and follow the primary to the new MANIFEST. However, the current implementation has a bug, described as follows. The new MANIFEST's first records have been generated by VersionSet::WriteSnapshot to describe the current state of the column families and the db as of the MANIFEST creation. Since the secondary instance has already finished recovering upon start, there is no need for the secondary to process these records. Actually, if the secondary were to replay these records, the secondary may end up adding the same SST files **again** to each column family, causing consistency checks done by VersionBuilder to fail. Therefore, we record the number of records to skip at the beginning of the new MANIFEST and ignore them. Test plan (on dev server) ``` $make clean && make -j32 all $./db_secondary_test ``` All existing unit tests must pass as well. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5472 Differential Revision: D15866771 Pulled By: riversand963 fbshipit-source-id: a1eec4837fb2ad13059398efb0f437e74fd53bed		5 years ago
..
db_impl.cc	Override check consistency for DBImplSecondary (#5469)	5 years ago
db_impl.h	Persistent Stats: persist stats history to disk (#5046)	5 years ago
db_impl_compaction_flush.cc	Potential fix for stress test failure due to "SST file ahead of WAL" error (#5412)	5 years ago
db_impl_debug.cc	Persistent Stats: persist stats history to disk (#5046)	5 years ago
db_impl_experimental.cc	simplify include directive involving inttypes (#5402)	5 years ago
db_impl_files.cc	simplify include directive involving inttypes (#5402)	5 years ago
db_impl_open.cc	Persistent Stats: persist stats history to disk (#5046)	5 years ago
db_impl_readonly.cc	Make format	5 years ago
db_impl_readonly.h	Organizing rocksdb/db directory	5 years ago
db_impl_secondary.cc	Override check consistency for DBImplSecondary (#5469)	5 years ago
db_impl_secondary.h	Override check consistency for DBImplSecondary (#5469)	5 years ago
db_impl_write.cc	WritePrepared: reduce prepared_mutex_ overhead (#5420)	5 years ago
db_secondary_test.cc	Fix a bug caused by secondary not skipping the beginning of new MANIFEST (#5472)	5 years ago