92731b6b4a
Summary: Primarily, this change adds a way to work around a bug limiting the effective output (and therefore debugability) of the Linux builds using parallel make. We would get make[1]: write error: stdout probably due to a kernel bug, apparently affecting both available ubuntu 16 machine images (maybe not affecting docker images, less horsepower). https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1814393 Now in the CircleCI config, make output on Ubuntu is piped through a custom 'cat' that ignores EAGAIN errors, which seems to fix the problem. Significant other changes: * Add another linux build that combines * LIB_MODE=shared, to ensure this works with compile and unit test execution * Alternative rocksdb namespace, to ensure this works (not rely on Travis) * ASSERT_STATUS_CHECKED=1, but with building all unit tests and running those expected to pass with it * Run release build with and without gflags. (Was running only without, ignore large swaths of code in a normal release build! Two regressions in this build, only with gflags, in the last week not caught by CI!) * Use gflags with unity and LITE build, as typical case. Debugability improvements: * Use V=1 to show commands being executed (thanks to EAGAIN work-around) * Print kernel version and compiler versions as part of V=1 output from Makefile Cosmetic other changes: * Put more commands on one line, for less clutter in CircleCI output pages * Remove redundant "all" in "make all check" and put make command options before targets * Change some recursive "make clean" into dependency on "clean," toward minimizing unnecessary overhead (detect platform, build version, etc.) of extra recursive makes Pull Request resolved: https://github.com/facebook/rocksdb/pull/7078 Reviewed By: siying Differential Revision: D22391647 Pulled By: pdillinger fbshipit-source-id: d446fccf5a8c568b37dc8748621c8a5c546fe135
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 especially 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/ and https://rocksdb.slack.com/
License
RocksDB is dual-licensed under both the GPLv2 (found in the COPYING file in the root directory) and Apache 2.0 License (found in the LICENSE.Apache file in the root directory). You may select, at your option, one of the above-listed licenses.