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

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Jay Zhuang a3acf2ef87 Add seqno to time mapping (#10338) ... Summary: Which will be used for tiered storage to preclude hot data from compacting to the cold tier (the last level). Internally, adding seqno to time mapping. A periodic_task is scheduled to record the current_seqno -> current_time in certain cadence. When memtable flush, the mapping informaiton is stored in sstable property. During compaction, the mapping information are merged and get the approximate time of sequence number, which is used to determine if a key is recently inserted or not and preclude it from the last level if it's recently inserted (within the `preclude_last_level_data_seconds`). Pull Request resolved: https://github.com/facebook/rocksdb/pull/10338 Test Plan: CI Reviewed By: siying Differential Revision: D37810187 Pulled By: jay-zhuang fbshipit-source-id: 6953be7a18a99de8b1cb3b162d712f79c2b4899f		2 years ago
..
compacted_db_impl.cc	Return "invalid argument" when read timestamp is too old (#10109)	2 years ago
compacted_db_impl.h	Add API for writing wide-column entities (#10242)	2 years ago
db_impl.cc	Add seqno to time mapping (#10338)	2 years ago
db_impl.h	Add seqno to time mapping (#10338)	2 years ago
db_impl_compaction_flush.cc	Add seqno to time mapping (#10338)	2 years ago
db_impl_debug.cc	Add seqno to time mapping (#10338)	2 years ago
db_impl_experimental.cc	Track SST unique id in MANIFEST and verify (#9990)	2 years ago
db_impl_files.cc	Fix race condition between file purge and backup/checkpoint (#10187)	2 years ago
db_impl_open.cc	Add seqno to time mapping (#10338)	2 years ago
db_impl_readonly.cc	Return "invalid argument" when read timestamp is too old (#10109)	2 years ago
db_impl_readonly.h	Add API for writing wide-column entities (#10242)	2 years ago
db_impl_secondary.cc	Update code comment and logging for secondary instance (#10260)	2 years ago
db_impl_secondary.h	Update code comment and logging for secondary instance (#10260)	2 years ago
db_impl_write.cc	Add API for writing wide-column entities (#10242)	2 years ago