MapD Core is an in-memory, column store, SQL relational database that was designed from the ground up to run on GPUs.
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This project is licensed under the Apache License, Version 2.0.
The repository includes a number of third party packages provided under separate licenses. Details about these packages and their respective licenses is at ThirdParty/licenses/index.md.
In order to clarify the intellectual property license granted with Contributions from any person or entity, OmniSci must have a Contributor License Agreement ("CLA") on file that has been signed by each Contributor, indicating agreement to the Contributor License Agreement. After making a pull request, a bot will notify you if a signed CLA is required and provide instructions for how to sign it. Please read the agreement carefully before signing and keep a copy for your records.
If this is your first time building MapD Core, install the dependencies mentioned in the Dependencies section below.
MapD uses CMake for its build system.
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=debug ..
make -j 4
The following cmake/ccmake options can enable/disable different features:
-DCMAKE_BUILD_TYPE=release- Build type and compiler options to use. Options areDebug,Release,RelWithDebInfo,MinSizeRel, and unset.-DENABLE_ASAN=off- Enable address sanitizer. Default isoff.-DENABLE_AWS_S3=on- Enable AWS S3 support, if available. Default ison.-DENABLE_CALCITE_DELETE_PATH=on- Enable Calcite Delete Path. Default ison.-DENABLE_CALCITE_UPDATE_PATH=on- Enable Calcite Update Path. Default ison.-DENABLE_CUDA=off- Disable CUDA. Default ison.-DENABLE_CUDA_KERNEL_DEBUG=off- Enable debugging symbols for CUDA kernels. Will dramatically reduce kernel performance. Default isoff.-DENABLE_DECODERS_BOUNDS_CHECKING=off- Enable bounds checking for column decoding. Default isoff.-DENABLE_FOLLY=on- Use Folly. Default ison.-DENABLE_IWYU=off- Enable include-what-you-use. Default isoff.-DENABLE_JIT_DEBUG=off- Enable debugging symbols for the JIT. Default isoff.-DENABLE_PROFILER=off- Enable google perftools. Default isoff.-DENABLE_STANDALONE_CALCITE=off- Require standalone Calcite server. Default isoff.-DENABLE_TESTS=on- Build unit tests. Default ison.-DENABLE_TSAN=off- Enable thread sanitizer. Default isoff.-DENABLE_CODE_COVERAGE=off- Enable code coverage symbols (clang only). Default isoff.-DENALBE_JAVA_REMOTE_DEBUG=on- Enable Java Remote Debug. Default isoff.-DMAPD_DOCS_DOWNLOAD=on- Download the latest master build of the documentation /docs.mapd.com. Default isoff. Note: this is a >50MB download.-DPREFER_STATIC_LIBS=off- Static link dependencies, if available. Default isoff.
MapD Core uses Google Test as its main testing framework. Tests reside under the Tests directory.
The sanity_tests target runs the most common tests. If using Makefiles to build, the tests may be run using:
make sanity_tests
AddressSanitizer can be activated by setting the ENABLE_ASAN CMake flag in a fresh build directory. At this time CUDA must also be disabled. In an empty build directory run CMake and compile:
mkdir build && cd build
cmake -DENABLE_ASAN=on -DENABLE_CUDA=off ..
make -j 4
Finally run the tests:
export ASAN_OPTIONS=alloc_dealloc_mismatch=0:handle_segv=0
make sanity_tests
ThreadSanitizer can be activated by setting the ENABLE_TSAN CMake flag in a fresh build directory. At this time CUDA must also be disabled. In an empty build directory run CMake and compile:
mkdir build && cd build
cmake -DENABLE_TSAN=on -DENABLE_CUDA=off ..
make -j 4
We use a TSAN suppressions file to ignore warnings in third party libraries. Source the suppressions file by adding it to your TSAN_OPTIONS env:
export TSAN_OPTIONS="suppressions=/path/to/mapd/config/tsan.suppressions"
Finally run the tests:
make sanity_tests
MapD Core uses CPack to generate packages for distribution. Packages generated on CentOS with static linking enabled can be used on most other recent Linux distributions.
To generate packages on CentOS (assuming starting from top level of the mapd-core repository):
mkdir build-package && cd build-package
cmake -DPREFER_STATIC_LIBS=on -DCMAKE_BUILD_TYPE=release ..
make -j 4
cpack -G TGZ
The first command creates a fresh build directory, to ensure there is nothing left over from a previous build.
The second command configures the build to prefer linking to the dependencies' static libraries instead of the (default) shared libraries, and to build using CMake's release configuration (enables compiler optimizations). Linking to the static versions of the libraries libraries reduces the number of dependencies that must be installed on target systems.
The last command generates a .tar.gz package. The TGZ can be replaced with, for example, RPM or DEB to generate a .rpm or .deb, respectively.
The startomnisci wrapper script may be used to start MapD Core in a testing environment. This script performs the following tasks:
- initializes the
datastorage directory viainitdb, if required - starts the main MapD Core server,
omnisci_server - starts the MapD Core web server,
omnisci_web_server, for serving MapD Immerse - offers to download and import a sample dataset, using the
insert_sample_datascript - attempts to open MapD Immerse in your web browser
Assuming you are in the build directory, and it is a subdirectory of the mapd-core repository, startomnisci may be run by:
../startomnisci
It is assumed that the following commands are run from inside the build directory.
Initialize the data storage directory. This command only needs to be run once.
mkdir data && ./bin/initdb data
Start the MapD Core server:
./bin/omnisci_server
In a new terminal, start the MapD Core web server:
./bin/omnisci_web_server
If desired, insert a sample dataset by running the insert_sample_data script in a new terminal:
../insert_sample_data
You can now start using the database. The omnisql utility may be used to interact with the database from the command line:
./bin/omnisql -p HyperInteractive
where HyperInteractive is the default password. The default user mapd is assumed if not provided.
You can also interact with the database using the web-based MapD Immerse frontend by visiting the web server's default port of 6273:
Note: usage of OmniSci Immerse is governed by a separate license agreement, provided under EULA-CE.txt. The version bundled with this project may only be used for non-commercial purposes.
Contributed code should compile without generating warnings by recent compilers on most Linux distributions. Changes to the code should follow the C++ Core Guidelines.
A .clang-format style configuration, based on the Chromium style guide, is provided at the top level of the repository. Please format your code using a recent version (6.0+ preferred) of ClangFormat before submitting.
To use:
clang-format -i File.cpp
A .clang-tidy configuration is provided at the top level of the repository. Please lint your code using a recent version (6.0+ preferred) of clang-tidy before submitting.
clang-tidy requires all generated files to exist before running. The easiest way to accomplish this is to simply run a full build before running clang-tidy. A build target which runs clang-tidy is provided. To use:
make clang-tidy
Note: clang-tidy may make invalid or overly verbose changes to the source code. It is recommended to first commit your changes, then run clang-tidy and review its recommended changes before amending them to your commit.
Note: the clang-tidy target uses the run-clang-tidy.py script provided with LLVM, which may depend on PyYAML. The target also depends on jq, which is used to filter portions of the compile_commands.json file.
MapD has the following dependencies:
| Package | Min Version | Required |
|---|---|---|
| CMake | 3.3 | yes |
| LLVM | 3.8-4.0, 6.0 | yes |
| GCC | 7.1 | no, if building with clang |
| Go | 1.6 | yes |
| Boost | 1.65.0 | yes |
| OpenJDK | 1.7 | yes |
| CUDA | 10.0 | yes, if compiling with GPU support |
| gperftools | yes | |
| gdal | yes | |
| Arrow | 0.10.0 | yes |
Dependencies for omnisci_web_server and other Go utils are in ThirdParty/go. See ThirdParty/go/src/mapd/vendor/README.md for instructions on how to add new deps.
MapD Core requires a number of dependencies which are not provided in the common CentOS/RHEL package repositories. A prebuilt package containing all these dependencies is provided for CentOS 7 (x86_64).
Use the scripts/mapd-deps-prebuilt.sh build script to install prebuilt dependencies.
These dependencies will be installed to a directory under /usr/local/mapd-deps. The mapd-deps-prebuilt.sh script also installs Environment Modules in order to simplify managing the required environment variables. Log out and log back in after running the mapd-deps-prebuilt.sh script in order to active Environment Modules command, module.
The mapd-deps environment module is disabled by default. To activate for your current session, run:
module load mapd-deps
To disable the mapd-deps module:
module unload mapd-deps
WARNING: The mapd-deps package contains newer versions of packages such as GCC and ncurses which might not be compatible with the rest of your environment. Make sure to disable the mapd-deps module before compiling other packages.
Instructions for installing CUDA are below.
It is preferred, but not necessary, to install CUDA and the NVIDIA drivers using the .rpm using the instructions provided by NVIDIA. The rpm (network) method (preferred) will ensure you always have the latest stable drivers, while the rpm (local) method allows you to install does not require Internet access.
The .rpm method requires DKMS to be installed, which is available from the Extra Packages for Enterprise Linux repository:
sudo yum install epel-release
Be sure to reboot after installing in order to activate the NVIDIA drivers.
The mapd-deps-prebuilt.sh script includes two files with the appropriate environment variables: mapd-deps-<date>.sh (for sourcing from your shell config) and mapd-deps-<date>.modulefile (for use with Environment Modules, yum package environment-modules). These files are placed in mapd-deps install directory, usually /usr/local/mapd-deps/<date>. Either of these may be used to configure your environment: the .sh may be sourced in your shell config; the .modulefile needs to be moved to the modulespath.
The scripts/mapd-deps-centos.sh script is used to build the dependencies. Modify this script and run if you would like to change dependency versions or to build on alternative CPU architectures.
cd scripts
module unload mapd-deps
./mapd-deps-centos.sh --compress
scripts/mapd-deps-osx.sh is provided that will automatically install and/or update Homebrew and use that to install all dependencies. Please make sure macOS is completely up to date and Xcode is installed before running. Xcode can be installed from the App Store.
mapd-deps-osx.sh will automatically install CUDA via Homebrew and add the correct environment variables to ~/.bash_profile.
mapd-deps-osx.sh will automatically install Java and Maven via Homebrew and add the correct environment variables to ~/.bash_profile.
Most build dependencies required by MapD Core are available via APT. Certain dependencies such as Thrift, Blosc, and Folly must be built as they either do not exist in the default repositories or have outdated versions. A prebuilt package containing all these dependencies is provided for Ubuntu 18.04 (x86_64). The dependencies will be installed to /usr/local/mapd-deps/ by default; see the Environment Variables section below for how to add these dependencies to your environment.
MapD Core requires a newer version of Boost than the version which is provided by Ubuntu 16.04. The scripts/mapd-deps-ubuntu1604.sh build script will compile and install a newer version of Boost into the /usr/local/mapd-deps/ directory.
Use the scripts/mapd-deps-prebuilt.sh build script to install prebuilt dependencies.
These dependencies will be installed to a directory under /usr/local/mapd-deps. The mapd-deps-prebuilt.sh script above will generate a script named mapd-deps.sh containing the environment variables which need to be set. Simply source this file in your current session (or symlink it to /etc/profile.d/mapd-deps.sh) in order to activate it:
source /usr/local/mapd-deps/mapd-deps.sh
Some installs of Ubuntu 18.04 may fail while building with a message similar to:
java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty
This is a known issue in 18.04 which will be resolved in Ubuntu 18.04.1. To resolve on 18.04:
sudo rm /etc/ssl/certs/java/cacerts
sudo update-ca-certificates -f
The CUDA and mapd-deps lib directories need to be added to LD_LIBRARY_PATH; the CUDA and mapd-deps bin directories need to be added to PATH. The mapd-deps-ubuntu.sh and mapd-deps-prebuilt.sh scripts will generate a script named mapd-deps.sh containing the environment variables which need to be set. Simply source this file in your current session (or symlink it to /etc/profile.d/mapd-deps.sh) in order to activate it:
source /usr/local/mapd-deps/mapd-deps.sh
Recent versions of Ubuntu provide the NVIDIA CUDA Toolkit and drivers in the standard repositories. To install:
sudo apt install -y \
nvidia-cuda-toolkit
Be sure to reboot after installing in order to activate the NVIDIA drivers.
The scripts/mapd-deps-ubuntu.sh and scripts/mapd-deps-ubuntu1604.sh scripts are used to build the dependencies for Ubuntu 18.04 and 16.04, respectively. The scripts will install all required dependencies (except CUDA) and build the dependencies which require it. Modify this script and run if you would like to change dependency versions or to build on alternative CPU architectures.
cd scripts
./mapd-deps-ubuntu.sh --compress
The following uses yaourt to install packages from the Arch User Repository.
yaourt -S \
git \
cmake \
boost \
google-glog \
extra/jdk8-openjdk \
clang \
llvm \
thrift \
go \
gdal \
maven
VERS=1.21-45
wget --continue https://github.com/jarro2783/bisonpp/archive/$VERS.tar.gz
tar xvf $VERS.tar.gz
pushd bisonpp-$VERS
./configure
make -j $(nproc)
sudo make install
popd
CUDA and the NVIDIA drivers may be installed using the following.
yaourt -S \
linux-headers \
cuda \
nvidia
Be sure to reboot after installing in order to activate the NVIDIA drivers.
The CUDA bin directories need to be added to PATH. The easiest way to do so is by creating a new file named /etc/profile.d/mapd-deps.sh containing the following:
PATH=/opt/cuda/bin:$PATH
export PATH