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

anand76 ab13d43e1d Pass a timeout to FileSystem for random reads (#6751 An error occurred ) ... Summary: Calculate ```IOOptions::timeout``` using ```ReadOptions::deadline``` and pass it to ```FileSystem::Read/FileSystem::MultiRead```. This allows us to impose a tighter bound on the time taken by Get/MultiGet on FileSystem/Envs that support IO timeouts. Even on those that don't support, check in ```RandomAccessFileReader::Read``` and ```MultiRead``` and return ```Status::TimedOut()``` if the deadline is exceeded. For now, TableReader creation, which might do file opens and reads, are not covered. It will be implemented in another PR. Tests: Update existing unit tests to verify the correct timeout value is being passed Pull Request resolved: https://github.com/facebook/rocksdb/pull/6751 Reviewed By: riversand963 Differential Revision: D21285631 Pulled By: anand1976 fbshipit-source-id: d89af843e5a91ece866e87aa29438b52a65a8567		5 years ago
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file_trace_reader_writer.cc	Pass a timeout to FileSystem for random reads (#6751 An error occurred )	5 years ago
file_trace_reader_writer.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433 An error occurred )	5 years ago