1c47c433ba
Summary: This fixes two bugs: "make clean" would never remove the generated file, util/build_version.cc, and since D33591, would be regenerated only if it were absent. * Makefile (clean): Remove the generated file. (util/build_version.cc): Depend on the no-prereq FORCE target, so that this target's rules are always run. Since this is a generated file, make it read-only. Also, be sure to remove the temporary file when it is the same as the original. Test Plan: Ensure that we attempt regeneration every time. Make it empty with an up-to-date time stamp and demonstrate that it is rebuilt with the expected content: $ : > util/build_version.cc $ make util/build_version.o GEN util/build_version.cc GEN util/build_version.d GEN util/build_version.cc CC util/build_version.o $ cat util/build_version.cc #include "build_version.h" const char* rocksdb_build_git_sha = "rocksdb_build_git_sha:v3.10-2-gb30e72a"; const char* rocksdb_build_git_date = "rocksdb_build_git_date:2015-03-27"; const char* rocksdb_build_compile_date = __DATE__; Reviewers: igor.sugak, sdong, ljin, igor, rven Reviewed By: rven Subscribers: dhruba Differential Revision: https://reviews.facebook.net/D36087
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/