59b3ee658f
Summary: Added this new function, which returns filename, size, and modified timestamp for each file in the provided directory. The default implementation retrieves the metadata sequentially using existing functions. In the next diff I'll make HdfsEnv override this function to use libhdfs's bulk get function. This won't work on windows due to the path separator. Test Plan: new unit test $ ./env_test --gtest_filter=EnvPosixTest.ConsistentChildrenMetadata Reviewers: yhchiang, sdong Reviewed By: sdong Subscribers: IslamAbdelRahman, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D53781
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/