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

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Siying Dong 3dbf4ba220 RangeSync not to sync last 1MB of the file ... Summary: From other ones' investigation: "sync_file_range() behavior highly depends on kernel version and filesystem. xfs does neighbor page flushing outside of the specified ranges. For example, sync_file_range(fd, 8192, 16384) does not only trigger flushing page #3 to #4, but also flushing many more dirty pages (i.e. up to page#16)... Ranges of the sync_file_range() should be far enough from write() offset (at least 1MB)." Test Plan: make all check Reviewers: igor, rven, kradhakrishnan, yhchiang, IslamAbdelRahman, anthony Reviewed By: anthony Subscribers: yoshinorim, MarkCallaghan, sumeet, domas, dhruba, leveldb, ljin Differential Revision: https://reviews.facebook.net/D15807		10 years ago
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rocksdb	RangeSync not to sync last 1MB of the file	10 years ago
utilities	Fix ROCKSDB_WARNING	10 years ago