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

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Mark Callaghan 993543d1be Add rate_delay_limit_milliseconds ... Summary: This adds the rate_delay_limit_milliseconds option to make the delay configurable in MakeRoomForWrite when the max compaction score is too high. This delay is called the Ln slowdown. This change also counts the Ln slowdown per level to make it possible to see where the stalls occur. From IO-bound performance testing, the Level N stalls occur: * with compression -> at the largest uncompressed level. This makes sense because compaction for compressed levels is much slower. When Lx is uncompressed and Lx+1 is compressed then files pile up at Lx because the (Lx,Lx+1)->Lx+1 compaction process is the first to be slowed by compression. * without compression -> at level 1 Task ID: #1832108 Blame Rev: Test Plan: run with real data, added test Revert Plan: Database Impact: Memcache Impact: Other Notes: EImportant: - begin *PUBLIC* platform impact section - Bugzilla: # - end platform impact - Reviewers: dhruba Reviewed By: dhruba Differential Revision: https://reviews.facebook.net/D9045		12 years ago
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c.h	Fix poor error on num_levels mismatch and few other minor improvements	12 years ago
cache.h	Codemod NULL to nullptr	12 years ago
comparator.h	A number of fixes:	13 years ago
db.h	Codemod NULL to nullptr	12 years ago
env.h	Codemod NULL to nullptr	12 years ago
filter_policy.h	Added bloom filter support.	13 years ago
iterator.h	A number of fixes:	13 years ago
options.h	Add rate_delay_limit_milliseconds	12 years ago
slice.h	manifest_dump: Add --hex=1 option	12 years ago
statistics.h	Refactor statistics. Remove individual functions like incNumFileOpens	12 years ago
status.h	Codemod NULL to nullptr	12 years ago
table.h	Codemod NULL to nullptr	12 years ago
table_builder.h	Fix all the lint errors.	12 years ago
transaction_log_iterator.h	GetSequence API in write batch.	12 years ago
types.h	GetUpdatesSince API to enable replication.	12 years ago
write_batch.h	Enhancements to rocksdb for better support for replication.	12 years ago