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

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Yi Wu 2cd00773c7 Add bulk create/drop column family API ... Summary: Adding DB::CreateColumnFamilie() and DB::DropColumnFamilies() to bulk create/drop column families. This is to address the problem creating/dropping 1k column families takes minutes. The bottleneck is we persist options files for every single column family create/drop, and it parses the persisted options file for verification, which take a lot CPU time. The new APIs simply create/drop column families individually, and persist options file once at the end. This improves create 1k column families to within ~0.1s. Further improvement can be merge manifest write to one IO. Closes https://github.com/facebook/rocksdb/pull/2248 Differential Revision: D5001578 Pulled By: yiwu-arbug fbshipit-source-id: d4e00bda671451e0b314c13e12ad194b1704aa03		8 years ago
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lua	Add GPLv2 as an alternative license.	8 years ago
backupable_db.h	Add GPLv2 as an alternative license.	8 years ago
checkpoint.h	Allow checkpointing without flushing	8 years ago
convenience.h	Updated all copyright headers to the new format.	9 years ago
date_tiered_db.h	Add GPLv2 as an alternative license.	8 years ago
db_ttl.h	Add GPLv2 as an alternative license.	8 years ago
document_db.h	Add GPLv2 as an alternative license.	8 years ago
env_librados.h	include/rocksdb/utilities/env_librados: fix typo	8 years ago
env_mirror.h	direct io write support	8 years ago
geo_db.h	Add GPLv2 as an alternative license.	8 years ago
info_log_finder.h	Updated all copyright headers to the new format.	9 years ago
json_document.h	Add GPLv2 as an alternative license.	8 years ago
ldb_cmd.h	Add GPLv2 as an alternative license.	8 years ago
ldb_cmd_execute_result.h	Add GPLv2 as an alternative license.	8 years ago
leveldb_options.h	Add GPLv2 as an alternative license.	8 years ago
memory_util.h	Updated all copyright headers to the new format.	9 years ago
object_registry.h	Generalize Env registration framework	8 years ago
optimistic_transaction_db.h	Add GPLv2 as an alternative license.	8 years ago
option_change_migration.h	Add GPLv2 as an alternative license.	8 years ago
options_util.h	Improve the documentation of LoadLatestOptions	9 years ago
sim_cache.h	add stats to Cache::LookUp()	9 years ago
spatial_db.h	Add GPLv2 as an alternative license.	8 years ago
stackable_db.h	Add bulk create/drop column family API	8 years ago
table_properties_collectors.h	Add GPLv2 as an alternative license.	8 years ago
transaction.h	Implement non-exclusive locks	8 years ago
transaction_db.h	Add GPLv2 as an alternative license.	8 years ago
transaction_db_mutex.h	Add GPLv2 as an alternative license.	8 years ago
utility_db.h	Ensure Windows build w/o port/port.h in public headers	10 years ago
write_batch_with_index.h	support PopSavePoint for WriteBatch	8 years ago