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

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Baptiste Lemaire c521a9ab2b Retire superfluous functions introduced in earlier mempurge PRs. (#8558) ... Summary: The main challenge to make the memtable garbage collection prototype (nicknamed `mempurge`) was to not get rid of WAL files that contain unflushed (but mempurged) data. That was successfully guaranteed by not writing the VersionEdit to the MANIFEST file after a successful mempurge. By not writing VersionEdits to the `MANIFEST` file after a succesful mempurge operation, we do not change the earliest log file number that contains unflushed data: `cfd->GetLogNumber()` (`cfd->SetLogNumber()` is only called in `VersionSet::ProcessManifestWrites`). As a result, a number of functions introduced earlier just for the mempurge operation are not obscolete/redundant. (e.g.: `FlushJob::ExtractEarliestLogFileNumber`), and this PR aims at cleaning up all these now-unnecessary functions. In particular, we no longer need to store the earliest log file number in the `MemTable` struct itself. This PR therefore also reverts the `MemTable` struct to its original form. Pull Request resolved: https://github.com/facebook/rocksdb/pull/8558 Test Plan: Already included in `db_flush_test.cc`. Reviewed By: anand1976 Differential Revision: D29764351 Pulled By: bjlemaire fbshipit-source-id: 0f43b260fa270251862512f397d3f24ee62e8437		3 years ago
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compacted_db_impl.cc	Make backups openable as read-only DBs (#8142)	4 years ago
compacted_db_impl.h	Move compacted_db_impl.[c|h] to db/db_impl (#8082)	4 years ago
db_impl.cc	Avoid updating option if there's no value updated (#8518)	3 years ago
db_impl.h	Delete legacy code not used any more. (#8508)	3 years ago
db_impl_compaction_flush.cc	Remove TaskLimiterToken::ReleaseOnce for fix (#8567)	3 years ago
db_impl_debug.cc	Eliminate compiler complaining, which the return type of the function… (#8498)	4 years ago
db_impl_experimental.cc	Replace reinterpret_cast with static_cast_with_check (#7067)	5 years ago
db_impl_files.cc	Make types of Immutable/Mutable Options fields match that of the underlying Option (#8176)	4 years ago
db_impl_open.cc	Retire superfluous functions introduced in earlier mempurge PRs. (#8558)	3 years ago
db_impl_readonly.cc	Make backups openable as read-only DBs (#8142)	4 years ago
db_impl_readonly.h	RocksJava - Add errorIfLogFileExists parameter to RocksDB.openReadOnly (#7046)	4 years ago
db_impl_secondary.cc	Retire superfluous functions introduced in earlier mempurge PRs. (#8558)	3 years ago
db_impl_secondary.h	Implement missing Handler methods in ColumnFamilyCollector. (#8456)	3 years ago
db_impl_write.cc	Retire superfluous functions introduced in earlier mempurge PRs. (#8558)	3 years ago