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

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Mayank Agarwal 9b50106f9a Dbid feature ... Summary: Create a new type of file on startup if it doesn't already exist called DBID. This will store a unique number generated from boost library's uuid header file. The use-case is to identify the case of a db losing all its data and coming back up either empty or from an image(backup/live replica's recovery) the key point to note is that DBID is not stored in a backup or db snapshot It's preferable to use Boost for uuid because: 1) A non-standard way of generating uuid is not good 2) /proc/sys/kernel/random/uuid generates a uuid but only on linux environments and the solution would not be clean 3) c++ doesn't have any direct way to get a uuid 4) Boost is a very good library that was already having linkage in rocksdb from third-party Note: I had to update the TOOLCHAIN_REV in build files to get latest verison of boost from third-party as the older version had a bug. I had to put Wno-uninitialized in Makefile because boost-1.51 has an unitialized variable and rocksdb would not comiple otherwise. Latet open-source for boost is 1.54 but is not there in third-party. I have notified the concerned people in fbcode about it. @kailiu : While releasing to third-party, an additional dependency will need to be created for boost in TARGETS file. I can help identify. Test Plan: Expand db_test to test 2 cases 1) Restarting db with Id file present - verify that no change to Id 2)Restarting db with Id file deleted - verify that a different Id is there after reopen Also run make all check Reviewers: dhruba, haobo, kailiu, sdong Reviewed By: dhruba CC: leveldb Differential Revision: https://reviews.facebook.net/D13587		11 years ago
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builder.cc	Universal Compaction to Have a Size Percentage Threshold To Decide Whether to Compress	11 years ago
builder.h	Universal Compaction to Have a Size Percentage Threshold To Decide Whether to Compress	11 years ago
c.cc	Add appropriate LICENSE and Copyright message.	11 years ago
c_test.c	Migrate names of properties from 'leveldb' prefix to 'rocksdb' prefix.	11 years ago
corruption_test.cc	Add appropriate LICENSE and Copyright message.	11 years ago
db_bench.cc	Add appropriate LICENSE and Copyright message.	11 years ago
db_filesnapshot.cc	Add appropriate LICENSE and Copyright message.	11 years ago
db_impl.cc	Dbid feature	11 years ago
db_impl.h	Universal Compaction to Have a Size Percentage Threshold To Decide Whether to Compress	11 years ago
db_impl_readonly.cc	Add appropriate LICENSE and Copyright message.	11 years ago
db_impl_readonly.h	Add appropriate LICENSE and Copyright message.	11 years ago
db_iter.cc	Fix Bug: iterator.Prev() or iterator.SeekToLast() might return the first element instead of the correct one	11 years ago
db_iter.h	Add appropriate LICENSE and Copyright message.	11 years ago
db_statistics.h	Add appropriate LICENSE and Copyright message.	11 years ago
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deletefile_test.cc	Dbid feature	11 years ago
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transaction_log_impl.cc	Disallow transaction log iterator to skip sequences	11 years ago
transaction_log_impl.h	Disallow transaction log iterator to skip sequences	11 years ago
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