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Update to leveldb 1.6

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Highlights
----------
Mmap at most 1000 files on Posix to improve performance for large databases.
Support for more architectures (thanks to Alexander K.)

Building and porting
--------------------
HP/UX support (issue 126)
AtomicPointer for ia64 (issue 123)
Sparc v9 support (issue 124)
Atomic ops for powerpc
Use -fno-builtin-memcmp only when using g++
Simplify IOS build rules (issue 114)
Use CXXFLAGS instead of CFLAGS when invoking C++ compiler (issue 118)
Fix snappy shared library problem (issue 94)
Fix shared library installation path regression
Endian-ness detection tweak for FreeBSD

Bug fixes
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Stop ignoring FLAGS_open_files in db_bench
Make bloom test behavior agnostic to endian-ness

Performance
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Limit number of mmapped files to 1000 to improve perf for large dbs
Do not delay for 1 second on shutdown path (issue 125)

Misc
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Make InMemoryEnv return a no-op logger
C binding now has a wrapper for free (issue 117)
Add thread-safety annotations
Added an in-process lock table (issue 120)
Make RandomAccessFile and SequentialFile non-copyable
This commit is contained in:
David Grogan
2012-10-12 11:53:12 -07:00
parent dd0d562b4d
commit 946e5b5a4c
25 changed files with 382 additions and 72 deletions
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TODO
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@@ -7,6 +7,7 @@ db
within [start_key..end_key]? For Chrome, deletion of obsolete
object stores, etc. can be done in the background anyway, so
probably not that important.
- There have been requests for MultiGet.
After a range is completely deleted, what gets rid of the
corresponding files if we do no future changes to that range. Make