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

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Levi Tamasi 61932cdf1d Add blob support to DBIter (#7731) ... Summary: The patch adds iterator support to the integrated BlobDB implementation. Whenever a blob reference is encountered during iteration, the corresponding blob is retrieved by calling `Version::GetBlob`, assuming the `expose_blob_index` (formerly `allow_blob`) flag is *not* set. (Note: the flag is set by the old stacked BlobDB implementation, which has its own blob file handling/blob retrieval logic.) In addition, `DBIter` now uniformly returns `Status::NotSupported` with the error message `"BlobDB does not support merge operator."` when encountering a blob reference while performing a merge (instead of potentially returning a message that implies the database should be opened using the stacked BlobDB's `Open`.) TODO: We can implement support for lazily retrieving the blob value (or in other words, bypassing the retrieval of blob values based on key) by extending the `Iterator` API with a new `PrepareValue` method (similarly to `InternalIterator`, which already supports lazy values). Pull Request resolved: https://github.com/facebook/rocksdb/pull/7731 Test Plan: `make check` Reviewed By: riversand963 Differential Revision: D25256293 Pulled By: ltamasi fbshipit-source-id: c39cd782011495a526cdff99c16f5fca400c4811		4 years ago
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db_impl.cc	Add blob support to DBIter (#7731)	4 years ago
db_impl.h	Add blob support to DBIter (#7731)	4 years ago
db_impl_compaction_flush.cc	Fix assert(cfd->imm()->NumNotFlushed() > 0) in FlushMemtable (#7744)	4 years ago
db_impl_debug.cc	Periodically flush info log out of application buffer (#7488)	4 years ago
db_impl_experimental.cc	Replace reinterpret_cast with static_cast_with_check (#7067)	4 years ago
db_impl_files.cc	Write min_log_number_to_keep to MANIFEST during atomic flush under 2 phase commit (#7570)	4 years ago
db_impl_open.cc	Add full_history_ts_low_ to FlushJob (#7655)	4 years ago
db_impl_readonly.cc	Add blob support to DBIter (#7731)	4 years ago
db_impl_readonly.h	RocksJava - Add errorIfLogFileExists parameter to RocksDB.openReadOnly (#7046)	4 years ago
db_impl_secondary.cc	Add blob support to DBIter (#7731)	4 years ago
db_impl_secondary.h	RocksJava - Add errorIfLogFileExists parameter to RocksDB.openReadOnly (#7046)	4 years ago
db_impl_write.cc	Fix assertion failure in bg flush (#7362)	4 years ago
db_secondary_test.cc	Fix assertion failure in bg flush (#7362)	4 years ago