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

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Yanqin Jin 7177dc46a1 Handle missing WAL in secondary mode (#5323) ... Summary: In secondary mode, it is possible that the secondary lists the primary's WAL directory, finds a WAL and tries to open it. It is possible that the primary deletes the WAL after secondary listing dir but before the secondary opening it. Then the secondary will fail to open the WAL file with a PathNotFound status. In this case, we can return OK without replaying WAL and optionally replay more MANIFEST. Test Plan (on my dev machine): Without this PR, the following will fail several times out of 100 runs. ``` ~/gtest-parallel/gtest-parallel -r 100 -w 16 ./db_secondary_test --gtest_filter=DBSecondaryTest.SwitchToNewManifestDuringOpen ``` With this PR, the above should always succeed. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5323 Differential Revision: D15763878 Pulled By: riversand963 fbshipit-source-id: c7164fa7cb8d9001abc258b6a2dc93613e4f38ff		5 years ago
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db_impl.cc	TransactionUtil::CheckKey() to skip unnecessary history (#4941)	5 years ago
db_impl.h	TransactionUtil::CheckKey() to skip unnecessary history (#4941)	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	Organizing rocksdb/db directory	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	Potential fix for stress test failure due to "SST file ahead of WAL" error (#5412)	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	Handle missing WAL in secondary mode (#5323)	5 years ago
db_impl_secondary.h	Organizing rocksdb/db directory	5 years ago
db_impl_write.cc	WritePrepared: reduce prepared_mutex_ overhead (#5420)	5 years ago
db_secondary_test.cc	Improve memtable earliest seqno assignment for secondary instance (#5413)	5 years ago