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

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Mike Kolupaev df38c1ce66 Add BlockBasedTableOptions::index_shortening (#5174) ... Summary: Introduce BlockBasedTableOptions::index_shortening to give users control on which key shortening techniques to be used in building index blocks. Before this patch, both separators and successor keys where shortened in indexes. With this patch, the default is set to kShortenSeparators to only shorten the separators. Since each index block has many separators and only one successor (last key), the change should not have negative impact on index block size. However it should prevent many unnecessary block loads where due to approximation introduced by shorted successor, seek would land us to the previous block and then fix it by moving to the next one. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5174 Differential Revision: D14884185 Pulled By: al13n321 fbshipit-source-id: 1b08bc8c03edcf09b6b8c16e9a7eea08ad4dd534		6 years ago
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cf_options.cc	Periodic Compactions (#5166)	6 years ago
cf_options.h	Periodic Compactions (#5166)	6 years ago
db_options.cc	Fix many bugs in log statement arguments (#5089)	6 years ago
db_options.h	Add DBOptions. avoid_unnecessary_blocking_io to defer file deletions (#5043)	6 years ago
options.cc	Change OptimizeForPointLookup() and OptimizeForSmallDb() (#5165)	6 years ago
options_helper.cc	Add BlockBasedTableOptions::index_shortening (#5174)	6 years ago
options_helper.h	Add BlockBasedTableOptions::index_shortening (#5174)	6 years ago
options_parser.cc	Add BlockBasedTableOptions::index_shortening (#5174)	6 years ago
options_parser.h	WritePrepared Txn: Optimize for recoverable state	7 years ago
options_sanity_check.cc	Change RocksDB License	7 years ago
options_sanity_check.h	Change RocksDB License	7 years ago
options_settable_test.cc	Add BlockBasedTableOptions::index_shortening (#5174)	6 years ago
options_test.cc	Option string/map can set merge operator from object registry (#5123)	6 years ago