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

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sdong c3ff14e2c1 Hint temperature of bottommost level files to FileSystem (#8222) ... Summary: As the first part of the effort of having placing different files on different storage types, this change introduces several things: (1) An experimental interface in FileSystem that specify temperature to a new file created. (2) A test FileSystemWrapper, SimulatedHybridFileSystem, that simulates HDD for a file of "warm" temperature. (3) A simple experimental feature ColumnFamilyOptions.bottommost_temperature. RocksDB would pass this value to FileSystem when creating any bottommost file. (4) A db_bench parameter that applies the (2) and (3) to db_bench. The motivation of the change is to introduce minimal changes that allow us to evolve tiered storage development. Pull Request resolved: https://github.com/facebook/rocksdb/pull/8222 Test Plan: ./db_bench --benchmarks=fillrandom --write_buffer_size=2000000 -max_bytes_for_level_base=20000000 -level_compaction_dynamic_level_bytes --reads=100 -compaction_readahead_size=20000000 --reads=100000 -num=10000000 followed by ./db_bench --benchmarks=readrandom,stats --write_buffer_size=2000000 -max_bytes_for_level_base=20000000 -simulate_hybrid_fs_file=/tmp/warm_file_list -level_compaction_dynamic_level_bytes -compaction_readahead_size=20000000 --reads=500 --threads=16 -use_existing_db --num=10000000 and see results as expected. Reviewed By: ajkr Differential Revision: D28003028 fbshipit-source-id: 4724896d5205730227ba2f17c3fecb11261744ce		4 years ago
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compaction.cc	Fix some typos in comments (#8066)	4 years ago
compaction.h	Refactor: use TableBuilderOptions to reduce parameter lists (#8240)	4 years ago
compaction_iteration_stats.h	Update compaction statistics to include the amount of data read from blob files (#8022)	4 years ago
compaction_iterator.cc	Fix some typos in comments (#8066)	4 years ago
compaction_iterator.h	Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033)	4 years ago
compaction_iterator_test.cc	Fix some typos in comments (#8066)	4 years ago
compaction_job.cc	Hint temperature of bottommost level files to FileSystem (#8222)	4 years ago
compaction_job.h	Add internal compaction API for Secondary instance (#8171)	4 years ago
compaction_job_stats_test.cc	Add more tests to ASSERT_STATUS_CHECKED (3), API change (#7715)	4 years ago
compaction_job_test.cc	Remove Legacy and Custom FileWrapper classes from header files (#7851)	4 years ago
compaction_picker.cc	Rename variables in ImmutableCFOptions to avoid conflicts with ImmutableDBOptions (#8227)	4 years ago
compaction_picker.h	Make max_subcompactions dynamically changeable (#7159)	4 years ago
compaction_picker_fifo.cc	Rename variables in ImmutableCFOptions to avoid conflicts with ImmutableDBOptions (#8227)	4 years ago
compaction_picker_fifo.h	Make max_subcompactions dynamically changeable (#7159)	4 years ago
compaction_picker_level.cc	Make max_subcompactions dynamically changeable (#7159)	4 years ago
compaction_picker_level.h	Make max_subcompactions dynamically changeable (#7159)	4 years ago
compaction_picker_test.cc	Fix some typos in comments (#8066)	4 years ago
compaction_picker_universal.cc	Rename variables in ImmutableCFOptions to avoid conflicts with ImmutableDBOptions (#8227)	4 years ago
compaction_picker_universal.h	Make max_subcompactions dynamically changeable (#7159)	4 years ago
sst_partitioner.cc	SST Partitioner interface that allows to split SST files (#6957)	4 years ago