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

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Dhruba Borthakur 806e264350 Ability for rocksdb to compact when flushing the in-memory memtable to a file in L0. ... Summary: Rocks accumulates recent writes and deletes in the in-memory memtable. When the memtable is full, it writes the contents on the memtable to a file in L0. This patch removes redundant records at the time of the flush. If there are multiple versions of the same key in the memtable, then only the most recent one is dumped into the output file. The purging of redundant records occur only if the most recent snapshot is earlier than the earliest record in the memtable. Should we switch on this feature by default or should we keep this feature turned off in the default settings? Test Plan: Added test case to db_test.cc Reviewers: sheki, vamsi, emayanke, heyongqiang Reviewed By: sheki CC: leveldb Differential Revision: https://reviews.facebook.net/D8991		11 years ago
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builder.cc	Ability for rocksdb to compact when flushing the in-memory memtable to a file in L0.	11 years ago
builder.h	Ability for rocksdb to compact when flushing the in-memory memtable to a file in L0.	11 years ago
c.cc	Fix poor error on num_levels mismatch and few other minor improvements	12 years ago
c_test.c	Fix poor error on num_levels mismatch and few other minor improvements	12 years ago
corruption_test.cc	Codemod NULL to nullptr	12 years ago
db_bench.cc	enable the ability to set key size in db_bench in rocksdb	11 years ago
db_filesnapshot.cc	Fix all the lint errors.	12 years ago
db_impl.cc	Ability for rocksdb to compact when flushing the in-memory memtable to a file in L0.	11 years ago
db_impl.h	Measure compaction time.	12 years ago
db_impl_readonly.cc	Fix for the weird behaviour encountered by ldb Get where it could read only the second-latest value	12 years ago
db_impl_readonly.h	Add a readonly db	12 years ago
db_iter.cc	A number of fixes:	13 years ago
db_iter.h	A number of fixes:	13 years ago
db_statistics.h	Refactor statistics. Remove individual functions like incNumFileOpens	12 years ago
db_stats_logger.cc	remove boost	12 years ago
db_test.cc	Ability for rocksdb to compact when flushing the in-memory memtable to a file in L0.	11 years ago
dbformat.cc	manifest_dump: Add --hex=1 option	12 years ago
dbformat.h	Zero out redundant sequence numbers for kvs to increase compression efficiency	12 years ago
dbformat_test.cc	Fix all warnings generated by -Wall option to the compiler.	12 years ago
filename.cc	Allow the logs to be purged by TTL.	12 years ago
filename.h	Added meta-database support.	12 years ago
filename_test.cc	Added meta-database support.	12 years ago
log_file.h	GetUpdatesSince API to enable replication.	12 years ago
log_format.h	A number of fixes:	13 years ago
log_reader.cc	Codemod NULL to nullptr	12 years ago
log_reader.h	Codemod NULL to nullptr	12 years ago
log_test.cc	Fix a number of object lifetime/ownership issues	12 years ago
log_writer.cc	Fix a number of object lifetime/ownership issues	12 years ago
log_writer.h	Fix a number of object lifetime/ownership issues	12 years ago
memtable.cc	Ability for rocksdb to compact when flushing the in-memory memtable to a file in L0.	11 years ago
memtable.h	Ability for rocksdb to compact when flushing the in-memory memtable to a file in L0.	11 years ago
memtablelist.cc	Codemod NULL to nullptr	12 years ago
memtablelist.h	Codemod NULL to nullptr	12 years ago
repair.cc	Ability for rocksdb to compact when flushing the in-memory memtable to a file in L0.	11 years ago
skiplist.h	Codemod NULL to nullptr	12 years ago
skiplist_test.cc	Codemod NULL to nullptr	12 years ago
snapshot.h	Ability for rocksdb to compact when flushing the in-memory memtable to a file in L0.	11 years ago
table_cache.cc	Refactor statistics. Remove individual functions like incNumFileOpens	12 years ago
table_cache.h	Codemod NULL to nullptr	12 years ago
transaction_log_iterator_impl.cc	Codemod NULL to nullptr	12 years ago
transaction_log_iterator_impl.h	Fix a number of object lifetime/ownership issues	12 years ago
version_edit.cc	Codemod NULL to nullptr	12 years ago
version_edit.h	Fix poor error on num_levels mismatch and few other minor improvements	12 years ago
version_edit_test.cc	Make some variables configurable for each db instance	12 years ago
version_set.cc	Codemod NULL to nullptr	12 years ago
version_set.h	Codemod NULL to nullptr	12 years ago
version_set_reduce_num_levels.cc	disable size compaction in ldb reduce_levels and added compression and file size parameter to it	12 years ago
version_set_test.cc	Codemod NULL to nullptr	12 years ago
write_batch.cc	added group commit; drastically speeds up mult-threaded synchronous write workloads	12 years ago
write_batch_internal.h	GetUpdatesSince API to enable replication.	12 years ago
write_batch_test.cc	Fix all warnings generated by -Wall option to the compiler.	12 years ago