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

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Dhruba Borthakur 5273c81483 Ability to invoke application hook for every key during compaction. ... Summary: There are certain use-cases where the application intends to delete older keys aftre they have expired a certian time period. One option for those applications is to periodically scan the entire database and delete appropriate keys. A better way is to allow the application to hook into the compaction process. This patch allows the application to set a method callback for every key that is being compacted. If this method returns true, then the key is not preserved in the output of the compaction. Test Plan: This is mostly to preview the proposed new public api. Since it is a public api, please do due diligence on reviewing it. I will be writing test cases for this api in mynext version of this patch. Reviewers: MarkCallaghan, heyongqiang Reviewed By: heyongqiang CC: sheki, adsharma Differential Revision: https://reviews.facebook.net/D6285		12 years ago
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c.h	Added bloom filter support.	13 years ago
cache.h	Print the block cache size in the LOG.	12 years ago
comparator.h	A number of fixes:	13 years ago
db.h	The BackupAPI should also list the length of the manifest file.	12 years ago
env.h	Enable LevelDb to create a new log file if current log file is too large.	12 years ago
filter_policy.h	Added bloom filter support.	13 years ago
iterator.h	A number of fixes:	13 years ago
options.h	Ability to invoke application hook for every key during compaction.	12 years ago
slice.h	Support for java access to leveldb via leveldbjni.	12 years ago
statistics.h	Clean up compiler warnings generated by -Wall option.	12 years ago
status.h	build shared libraries; updated version to 1.3; add Status accessors	13 years ago
table.h	Trigger read compaction only if seeks to storage are incurred.	12 years ago
table_builder.h	Allow having different compression algorithms on different levels.	12 years ago
write_batch.h	A number of fixes:	13 years ago