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

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Andrew Kryczka 7ad4b38617 Ensure writes to WAL tail during `FlushWAL(true /* sync */)` will be synced (#10560) ... Summary: WAL append and switch can both happen between `FlushWAL(true /* sync */)`'s sync operations and its call to `MarkLogsSynced()`. We permit this since locks need to be released for the sync operations. Such an appended/switched WAL is both inactive and incompletely synced at the time `MarkLogsSynced()` processes it. Prior to this PR, `MarkLogsSynced()` assumed all inactive WALs were fully synced and removed them from consideration for future syncs. That was wrong in the scenario described above and led to the latest append(s) never being synced. This PR changes `MarkLogsSynced()` to only remove inactive WALs from consideration for which all flushed data has been synced. Pull Request resolved: https://github.com/facebook/rocksdb/pull/10560 Test Plan: repro unit test for the scenario described above. Without this PR, it fails on "key2" not found Reviewed By: riversand963 Differential Revision: D38957391 Pulled By: ajkr fbshipit-source-id: da77175eba97ff251a4219b227b3bb2d4843ed26		2 years ago
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compacted_db_impl.cc	Add support for wide-column point lookups (#10540)	2 years ago
compacted_db_impl.h	Add API for writing wide-column entities (#10242)	2 years ago
db_impl.cc	Ensure writes to WAL tail during `FlushWAL(true /* sync */)` will be synced (#10560)	2 years ago
db_impl.h	Add support for wide-column point lookups (#10540)	2 years ago
db_impl_compaction_flush.cc	WritableFileWriter tries to skip operations after failure (#10489)	2 years ago
db_impl_debug.cc	Do not hold mutex when write keys if not necessary (#7516)	2 years ago
db_impl_experimental.cc	Remove unused fields from FileMetaData (temporarily) (#10443)	2 years ago
db_impl_files.cc	Do not hold mutex when write keys if not necessary (#7516)	2 years ago
db_impl_open.cc	Fragment memtable range tombstone in the write path (#10380)	2 years ago
db_impl_readonly.cc	Add support for wide-column point lookups (#10540)	2 years ago
db_impl_readonly.h	Add API for writing wide-column entities (#10242)	2 years ago
db_impl_secondary.cc	Add support for wide-column point lookups (#10540)	2 years ago
db_impl_secondary.h	Update code comment and logging for secondary instance (#10260)	2 years ago
db_impl_write.cc	Prevent a case of WriteBufferManager flush thrashing (#6364)	2 years ago