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

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Dhruba Borthakur c1bb32e1ba Trigger read compaction only if seeks to storage are incurred. ... Summary: In the current code, a Get() call can trigger compaction if it has to look at more than one file. This causes unnecessary compaction because looking at more than one file is a penalty only if the file is not yet in the cache. Also, th current code counts these files before the bloom filter check is applied. This patch counts a 'seek' only if the file fails the bloom filter check and has to read in data block(s) from the storage. This patch also counts a 'seek' if a file is not present in the file-cache, because opening a file means that its index blocks need to be read into cache. Test Plan: unit test attached. I will probably add one more unti tests. Reviewers: heyongqiang Reviewed By: heyongqiang CC: MarkCallaghan Differential Revision: https://reviews.facebook.net/D5709		12 years ago
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block.cc	Added bloom filter support.	13 years ago
block.h	Added bloom filter support.	13 years ago
block_builder.cc	A number of fixes:	13 years ago
block_builder.h	A number of fixes:	13 years ago
filter_block.cc	Added bloom filter support.	13 years ago
filter_block.h	Added bloom filter support.	13 years ago
filter_block_test.cc	Added bloom filter support.	13 years ago
format.cc	add bzip2 compression	12 years ago
format.h	Added bloom filter support.	13 years ago
iterator.cc	A number of fixes:	13 years ago
iterator_wrapper.h	sync with upstream @21627589	13 years ago
merger.cc	A number of fixes:	13 years ago
merger.h	A number of fixes:	13 years ago
table.cc	Trigger read compaction only if seeks to storage are incurred.	12 years ago
table_builder.cc	Clean up compiler warnings generated by -Wall option.	12 years ago
table_test.cc	add bzip2 compression	12 years ago
two_level_iterator.cc	A number of fixes:	13 years ago
two_level_iterator.h	A number of fixes:	13 years ago