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

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Cheng Chang afb97094ae Skip high levels with no key falling in the range in CompactRange (#6482) ... Summary: In CompactRange, if there is no key in memtable falling in the specified range, then flush is skipped. This PR extends this skipping logic to SST file levels: it starts compaction from the highest level (starting from L0) that has files with key falling in the specified range, instead of always starts from L0. Pull Request resolved: https://github.com/facebook/rocksdb/pull/6482 Test Plan: A new test ManualCompactionTest::SkipLevel is added. Also updated a test related to statistics of index block cache hit in db_test2, the index cache hit is increased by 1 in this PR because when checking overlap for the key range in L0, OverlapWithLevelIterator will do a seek in the table cache iterator, which will read from the cached index. Also updated db_compaction_test and db_test to use correct range for full compaction. Differential Revision: D20251149 Pulled By: cheng-chang fbshipit-source-id: f822157cf4796972bd5035d9d7178d8dfb7af08b		5 years ago
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db_impl.cc	Fix data race of GetCreationTimeOfOldestFile() (#6473)	5 years ago
db_impl.h	Replace Directory with FSDirectory in DB (#6468)	5 years ago
db_impl_compaction_flush.cc	Skip high levels with no key falling in the range in CompactRange (#6482)	5 years ago
db_impl_debug.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
db_impl_experimental.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
db_impl_files.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
db_impl_open.cc	Replace Directory with FSDirectory in DB (#6468)	5 years ago
db_impl_readonly.cc	return timestamp from get (#6409)	5 years ago
db_impl_readonly.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
db_impl_secondary.cc	return timestamp from get (#6409)	5 years ago
db_impl_secondary.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
db_impl_write.cc	Replace Directory with FSDirectory in DB (#6468)	5 years ago
db_secondary_test.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago