e61f38e5a0
Summary: Prior to this the native library loader instance didn`t care about a state. So if library loading was called multiple times, multiple copies of the shared object were put into the tmp folder and loaded into the JVM. This changed within this commit to the following behavior: - library loading is now synchronized - library is loaded within the first call - if loading was successful the library loaded sets a flag - every subsequent call checks for a boolean flag indicating if there was already a successful attempt Test Plan: - Execute example and watch tmp folder while the example is running - After this patch only one shared object will be in the tmp folder Usual tests: - make rocksdbjava jtest - mvn -f rocksjni.pom package Reviewers: adamretter, ankgup87, yhchiang Subscribers: dhruba Differential Revision: https://reviews.facebook.net/D32133 |
||
|---|---|---|
| build_tools | ||
| coverage | ||
| db | ||
| doc | ||
| examples | ||
| hdfs | ||
| helpers/memenv | ||
| include | ||
| java | ||
| linters | ||
| port | ||
| table | ||
| third-party/rapidjson | ||
| tools | ||
| util | ||
| utilities | ||
| .arcconfig | ||
| .clang-format | ||
| .gitignore | ||
| .travis.yml | ||
| AUTHORS | ||
| CONTRIBUTING.md | ||
| HISTORY.md | ||
| INSTALL.md | ||
| LICENSE | ||
| Makefile | ||
| PATENTS | ||
| README.md | ||
| ROCKSDB_LITE.md | ||
| Vagrantfile | ||
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/