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

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Changyu Bi 4aa52d89cf Drop range tombstone during non-bottommost compaction (#11459) ... Summary: Similar to point tombstones, we can drop a range tombstone during compaction when we know its range does not exist in any higher level. This PR adds this optimization. Some existing test in db_range_del_test is fixed to work under this optimization. Pull Request resolved: https://github.com/facebook/rocksdb/pull/11459 Test Plan: * Add unit test `DBRangeDelTest, NonBottommostCompactionDropRangetombstone`. * Ran crash test that issues range deletion for a few hours: `python3 tools/db_crashtest.py blackbox --simple --write_buffer_size=1048576 --delrangepercent=10 --writepercent=31 --readpercent=40` Reviewed By: ajkr Differential Revision: D46007904 Pulled By: cbi42 fbshipit-source-id: 3f37205b6778b7d55ed106369ca41b0632a6d0fd		1 year ago
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.gitkeep	Better management of unreleased HISTORY (#11481)	1 year ago
compact_range_to_bottom.md	`CompactRange()` always compacts to bottommost level for leveled compaction (#11468)	1 year ago
drop_range_tombstone.md	Drop range tombstone during non-bottommost compaction (#11459)	1 year ago
sst_read_micros.md	Better management of unreleased HISTORY (#11481)	1 year ago