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

Andrew Kryczka d659faad54 Level-based L0->L0 compaction ... Summary: Level-based L0->L0 compaction operates on spans of files that aren't currently being compacted. It reduces the number of L0 files, thus making write stall conditions harder to reach. - L0->L0 is triggered when base level is unavailable due to pending compactions - L0->L0 always outputs one file of at most `max_level0_burst_file_size` bytes. - Subcompactions are disabled for L0->L0 since we want to output one file. - Input files are chosen as the longest span of available files that will fit within the size limit. This minimizes number of files in L0. Closes https://github.com/facebook/rocksdb/pull/2027 Differential Revision: D4760318 Pulled By: ajkr fbshipit-source-id: 9d07183		8 years ago
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rocks_lua_compaction_filter.cc	rocks_lua_compaction_filter: add unused attribute to a variable	9 years ago
rocks_lua_test.cc	Level-based L0->L0 compaction	8 years ago