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

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Vijay Nadimpalli 24b118ad98 Combine the read-ahead logic for user reads and compaction reads (#5431) ... Summary: Currently the read-ahead logic for user reads and compaction reads go through different code paths where compaction reads create new table readers and use `ReadaheadRandomAccessFile`. This change is to unify read-ahead logic to use read-ahead in BlockBasedTableReader::InitDataBlock(). As a result of the change `ReadAheadRandomAccessFile` class and `new_table_reader_for_compaction_inputs` option will no longer be used. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5431 Test Plan: make check Here is the benchmarking - https://gist.github.com/vjnadimpalli/083cf423f7b6aa12dcdb14c858bc18a5 Differential Revision: D15772533 Pulled By: vjnadimpalli fbshipit-source-id: b71dca710590471ede6fb37553388654e2e479b9		6 years ago
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rocksdb	Combine the read-ahead logic for user reads and compaction reads (#5431)	6 years ago