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Andrew Kryczka 48e8baebc0 Decouple data iterator and range deletion iterator in TableCache 
Summary:
Previously we used TableCache::NewIterator() for multiple purposes (data
block iterator and range deletion iterator), and returned non-ok status in
the data block iterator. In one case where the caller only used the range
deletion block iterator (9e7cf3469b/db/version_set.cc (L965-L973)),
we didn't check/free the data block iterator containing non-ok status, which
caused a valgrind error.

So, this diff decouples creation of data block and range deletion block iterators,
and updates the callers accordingly. Both functions can return non-ok status
in an InternalIterator. Since the non-ok status is returned in an iterator that the
callers will definitely use, it should be more usable/less error-prone.
Closes https://github.com/facebook/rocksdb/pull/1513

Differential Revision: D4181423

Pulled By: ajkr

fbshipit-source-id: 835b8f5
 		2016-11-15 17:24:28 -08:00
arcanist_util Rocksdb contruns to new Sandcastle API 2016-11-10 10:54:20 -08:00
build_tools Update documentation to point at gcc 4.8 2016-10-29 12:09:17 -07:00
cmake/modules cmake support for linux and osx (#1358) 2016-09-28 11:53:15 -07:00
coverage Fix coverage script 2014-11-03 14:53:00 -08:00
db Decouple data iterator and range deletion iterator in TableCache 2016-11-15 17:24:28 -08:00
docs Remove all instances of relative_url until GitHub pages problem is fixed. 2016-11-15 07:40:18 -08:00
examples Fix failed compaction_filter_example and add it into make all 2016-11-15 17:09:10 -08:00
hdfs Fix bug in UnScSigned-off-by: xh931076284 <931076284@qq.com> (#1336) 2016-09-14 10:17:34 -07:00
include/rocksdb DeleteRange interface 2016-11-15 15:24:16 -08:00
java Java API - Implement GetFromBatch and GetFromBatchAndDB in WBWI 2016-11-06 02:44:07 -08:00
memtable Optimize sequential insert into memtable - Part 1: Interface 2016-11-13 19:09:18 -08:00
port Fix integer overflow in GetL0ThresholdSpeedupCompaction (#1378) 2016-10-23 18:43:29 -07:00
table Decouple data iterator and range deletion iterator in TableCache 2016-11-15 17:24:28 -08:00
third-party Fix clang analyzer errors 2016-07-08 17:50:51 -07:00
tools ldb support for range delete 2016-11-15 15:54:20 -08:00
util Dynamic max_total_wal_size option 2016-11-14 22:54:17 -08:00
utilities Fix 2PC Recovery SeqId Miscount 2016-11-10 11:09:22 -08:00
.arcconfig Make rocksdb work with internal repo 2016-10-28 14:59:50 -07:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.gitignore Make rocksdb work with internal repo 2016-10-28 14:59:50 -07:00
.travis.yml Fix travis 2016-08-31 00:10:49 -07:00
AUTHORS Add AUTHORS file. Fix #203 2014-09-29 10:52:18 -07:00
CMakeLists.txt Optimize sequential insert into memtable - Part 1: Interface 2016-11-13 19:09:18 -08:00
CONTRIBUTING.md facebook accounts are not required for CLA signers 2014-07-08 05:57:54 -04:00
DEFAULT_OPTIONS_HISTORY.md Release RocksDB 4.8.0 2016-05-02 14:38:04 -07:00
DUMP_FORMAT.md First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
HISTORY.md DeleteRange interface 2016-11-15 15:24:16 -08:00
INSTALL.md Update documentation to point at gcc 4.8 2016-10-29 12:09:17 -07:00
LANGUAGE-BINDINGS.md Update LANGUAGE-BINDINGS.md 2016-07-15 13:09:30 +02:00
LICENSE Updated all copyright headers to the new format. 2016-02-09 15:12:00 -08:00
Makefile Parallize persistent_cache_test and transaction_test 2016-11-14 20:09:19 -08:00
PATENTS Update Patent Grant. 2015-04-13 10:33:43 +01:00
README.md Appveyor badge to show master branch 2016-07-26 13:54:08 -07:00
ROCKSDB_LITE.md Optimistic Transactions 2015-05-29 14:36:35 -07:00
USERS.md Adding Dgraph to list of Users (#1291) 2016-09-12 17:33:44 -07:00
Vagrantfile Update Vagrant file (test internal phabricator workflow) 2016-10-28 15:39:19 -07:00
WINDOWS_PORT.md Commit both PR and internal code review changes 2015-07-07 16:58:20 -07:00
appveyor.yml fix vs generator (#1269) 2016-08-10 09:08:13 -07:00
src.mk Support IngestExternalFile (remove AddFile restrictions) 2016-10-20 17:05:32 -07:00
thirdparty.inc Introduce XPRESS compresssion on Windows. (#1081) 2016-04-19 22:54:24 -07:00

README.md

RocksDB: A Persistent Key-Value Store for Flash and RAM Storage

Build Status Build status

RocksDB is developed and maintained by Facebook Database Engineering Team. It is built on earlier work on LevelDB by Sanjay Ghemawat (sanjay@google.com) and Jeff Dean (jeff@google.com)

This code is a library that forms the core building block for a fast key value server, especially suited for storing data on flash drives. It has a Log-Structured-Merge-Database (LSM) design with flexible tradeoffs between Write-Amplification-Factor (WAF), Read-Amplification-Factor (RAF) and Space-Amplification-Factor (SAF). It has multi-threaded compactions, making it specially suitable for storing multiple terabytes of data in a single database.

Start with example usage here: https://github.com/facebook/rocksdb/tree/master/examples

See the github wiki for more explanation.

The public interface is in include/. Callers should not include or rely on the details of any other header files in this package. Those internal APIs may be changed without warning.

Design discussions are conducted in https://www.facebook.com/groups/rocksdb.dev/