rocksdb

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

Jim Meyering 0a91bca5db test: avoid vuln-inducing use of temporary directory Summary: Without this change, someone on the machine on which I run "make check" could cause me to overwrite arbitrary files owned by me, via a symlink attack. Instead of using a predictable temporary directory and accepting to use a preexisting one, always create a new one using mkdtemp. If $TEST_IOCTL_FRIENDLY_TMPDIR is set and usable, attempt first to find a usable temporary directory therein. If not, or if unusable, then try /var/tmp and /tmp. If none of those is usable abort with a diagnostic. To do that, I added a new class. Its constructor finds a suitable directory or aborts, the sole member prints that directory's name, and the destructor unlinks what should be an empty directory. Note that while the code before this did not remove its temporary directory, there was only one per $UID. Now, there would be at least one per run or one per test, depending on implementation, so it is important to remove them. Test Plan: Run this on a fedora rawhide system, where /tmp is a tmpfs file system, and /var/tmp is ext4. # This gives a diagnostic that /dev/shm is not suitable # and ends up using /var/tmp. TEST_IOCTL_FRIENDLY_TMPDIR=/dev/shm ./env_test # Uses /var/tmp; same as when envvar not set. TEST_IOCTL_FRIENDLY_TMPDIR=/var/tmp ./env_test # Uses /tmp unless it's tmpfs, in which case it gives # a diagnostic and uses /var/tmp. TEST_IOCTL_FRIENDLY_TMPDIR=/tmp ./env_test Reviewers: ljin, rven, igor.sugak, yhchiang, sdong, igor Reviewed By: igor Subscribers: dhruba Differential Revision: https://reviews.facebook.net/D37287		10 years ago
arcanist_util	Integrate Jenkins with Phabricator	10 years ago
build_tools	Add rpath for production builds	10 years ago
coverage	Fix coverage script	10 years ago
db	Add experimental API MarkForCompaction()	10 years ago
doc	Remove seek compaction	11 years ago
examples	Fix formatting	10 years ago
hdfs	Remove unused parameter in CancelAllBackgroundWork	10 years ago
include	Add experimental API MarkForCompaction()	10 years ago
java	[RocksJava] Fix RateLimiter Tests in 3.10	10 years ago
port	stack_trace.cc: fix #elif check for OS_MACOSX	10 years ago
table	SyncPoint to allow a callback with an argument and use it to get DBTest.DynamicLevelCompressionPerLevel2 more straight-forward	10 years ago
third-party	Update COMMIT.md	10 years ago
tools	Improve benchmark scripts	10 years ago
util	test: avoid vuln-inducing use of temporary directory	10 years ago
utilities	maint: use ASSERT_TRUE, not ASSERT_EQ(true; same for false	10 years ago
.arcconfig	Integrate Jenkins with Phabricator	10 years ago
.clang-format	A script that automatically reformat affected lines	11 years ago
.gitignore	run 'make check's rules (and even subtests) in parallel	10 years ago
.travis.yml	Only run db_test in Travis	10 years ago
AUTHORS	Add AUTHORS file. Fix #203	10 years ago
CONTRIBUTING.md	facebook accounts are not required for CLA signers	11 years ago
HISTORY.md	A new call back to TablePropertiesCollector to allow users know the entry is add, delete or merge	10 years ago
INSTALL.md	Optimize default compile to compilation platform by default	10 years ago
LICENSE	Fix copyright year	11 years ago
Makefile	One last fix to Makefile	10 years ago
PATENTS	Update Patent Grant.	10 years ago
README.md	Replaced "built on on earlier work" by "built on earlier work" in README.md	10 years ago
ROCKSDB_LITE.md	RocksDBLite	11 years ago
USERS.md	Update USERS.md	10 years ago
Vagrantfile	RocksDB on FreeBSD support	10 years ago
src.mk	Add experimental API MarkForCompaction()	10 years ago

README.md

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

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/