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Author SHA1 Message Date
Sanjay Ghemawat 85584d497e Added bloom filter support. 
In particular, we add a new FilterPolicy class.  An instance
of this class can be supplied in Options when opening a
database.  If supplied, the instance is used to generate
summaries of keys (e.g., a bloom filter) which are placed in
sstables.  These summaries are consulted by DB::Get() so we
can avoid reading sstable blocks that are guaranteed to not
contain the key we are looking for.

This change provides one implementation of FilterPolicy
based on bloom filters.

Other changes:
- Updated version number to 1.4.
- Some build tweaks.
- C binding for CompactRange.
- A few more benchmarks: deleteseq, deleterandom, readmissing, seekrandom.
- Minor .gitignore update.
 2012-04-17 08:36:46 -07:00
dgrogan@chromium.org 69c6d38342 reverting disastrous MOE commit, returning to r21 
git-svn-id: https://leveldb.googlecode.com/svn/trunk@23 62dab493-f737-651d-591e-8d6aee1b9529
 2011-04-19 23:11:15 +00:00
dgrogan@chromium.org b743906eea Revision created by MOE tool push_codebase. 
MOE_MIGRATION=


git-svn-id: https://leveldb.googlecode.com/svn/trunk@22 62dab493-f737-651d-591e-8d6aee1b9529
 2011-04-19 23:01:25 +00:00
dgrogan@chromium.org b409afe968 chmod a-x 
git-svn-id: https://leveldb.googlecode.com/svn/trunk@21 62dab493-f737-651d-591e-8d6aee1b9529
 2011-04-18 23:15:58 +00:00
dgrogan@chromium.org f779e7a5d8 @20602303. Default file permission is now 755. 
git-svn-id: https://leveldb.googlecode.com/svn/trunk@20 62dab493-f737-651d-591e-8d6aee1b9529
 2011-04-12 19:38:58 +00:00
jorlow@chromium.org f67e15e50f Initial checkin. 
git-svn-id: https://leveldb.googlecode.com/svn/trunk@2 62dab493-f737-651d-591e-8d6aee1b9529
 2011-03-18 22:37:00 +00:00