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

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sdong 692f6a3138 Implement NextAndGetResult() in memtable and level iterator (#7179) ... Summary: NextAndGetResult() is not implemented in memtable and is very simply implemented in level iterator. The result is that for a normal leveled iterator, performance regression will be observed for calling PrepareValue() for most iterator Next(). Mitigate the problem by implementing the function for both iterators. In level iterator, the implementation cannot be perfect as when calling file iterator's SeekToFirst() we don't have information about whether the value is prepared. Fortunately, the first key should not cause a big portion of the CPu. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7179 Test Plan: Run normal crash test for a while. Reviewed By: anand1976 Differential Revision: D22783840 fbshipit-source-id: c19f45cdf21b756190adef97a3b66ccde3936e05		4 years ago
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adaptive	Extend Get/MultiGet deadline support to table open (#6982)	4 years ago
block_based	minimize BlockIter comparator scope (#7149)	4 years ago
cuckoo	Extend Get/MultiGet deadline support to table open (#6982)	4 years ago
plain	Fixed Factory construct just for calling .Name() (#7080)	4 years ago
block_fetcher.cc	Skip unnecessary allocation for mmap reads under 5000 bytes (#7043)	4 years ago
block_fetcher.h	Reduce memory copies when fetching and uncompressing blocks from SST files (#6689)	4 years ago
block_fetcher_test.cc	More Makefile Cleanup (#7097)	4 years ago
cleanable_test.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	4 years ago
format.cc	Extend Get/MultiGet deadline support to table open (#6982)	4 years ago
format.h	Extend Get/MultiGet deadline support to table open (#6982)	4 years ago
get_context.cc	Add timestamp to delete (#6253)	4 years ago
get_context.h	Stats for redundant insertions into block cache (#6681)	4 years ago
internal_iterator.h	Properly report IO errors when IndexType::kBinarySearchWithFirstKey is used (#6621)	4 years ago
iter_heap.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	4 years ago
iterator.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	4 years ago
iterator_wrapper.h	Implement NextAndGetResult() in memtable and level iterator (#7179)	4 years ago
merger_test.cc	More Makefile Cleanup (#7097)	4 years ago
merging_iterator.cc	Properly report IO errors when IndexType::kBinarySearchWithFirstKey is used (#6621)	4 years ago
merging_iterator.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	4 years ago
meta_blocks.cc	Separate internal and user key comparators in `BlockIter` (#6944)	4 years ago
meta_blocks.h	Extend Get/MultiGet deadline support to table open (#6982)	4 years ago
mock_table.cc	Add hash of key/value checks when paranoid_file_checks=true (#7134)	4 years ago
mock_table.h	Add hash of key/value checks when paranoid_file_checks=true (#7134)	4 years ago
multiget_context.h	Allow MultiGet users to limit cumulative value size (#6826)	4 years ago
persistent_cache_helper.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	4 years ago
persistent_cache_helper.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	4 years ago
persistent_cache_options.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	4 years ago
scoped_arena_iterator.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	4 years ago
sst_file_dumper.cc	Fix GetFileDbIdentities (#7104)	4 years ago
sst_file_dumper.h	Fix GetFileDbIdentities (#7104)	4 years ago
sst_file_reader.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	4 years ago
sst_file_reader_test.cc	Allow table/sst_file_reader_test.cc to use custom Env (#6536)	4 years ago
sst_file_writer.cc	Store DB identity and DB session ID in SST files (#6983)	4 years ago
sst_file_writer_collectors.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	4 years ago
table_builder.h	Store DB identity and DB session ID in SST files (#6983)	4 years ago
table_properties.cc	Store DB identity and DB session ID in SST files (#6983)	4 years ago
table_properties_internal.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	4 years ago
table_reader.h	For ApproximateSizes, pro-rate table metadata size over data blocks (#6784)	4 years ago
table_reader_bench.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	4 years ago
table_reader_caller.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	4 years ago
table_test.cc	More Makefile Cleanup (#7097)	4 years ago
two_level_iterator.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	4 years ago
two_level_iterator.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	4 years ago