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Open-source library for scalable in-database analytics.
C++ C Python CMake Shell PLpgSQL

DT: Cast count(*) output to long

JIRA: MADLIB-917

In some situations the count(*) output is interpreted as a
decimal.Decimal instead of a long. This leads to invalid operations
between that output and other values. We fix by explicitly casting to a
long.
latest commit 202fdaceb4
@iyerr3 iyerr3 authored

README.md

MADlib® is an open-source library for scalable in-database analytics. It provides data-parallel implementations of mathematical, statistical and machine learning methods for structured and unstructured data.

Installation and Contribution

See the project webpage MADlib Home for links to the latest binary and source packages. For installation and contribution guides, please see MADlib Wiki

User and Developer Documentation

The latest documentation of MADlib modules can be found at MADlib Docs or can be accessed directly from the MADlib installation directory by opening doc/user/html/index.html.

Architecture

The following block-diagram gives a high-level overview of MADlib's architecture.

MADlib Architecture

Third Party Components

MADlib incorporates material from the following third-party components

  1. argparse 1.2.1 "provides an easy, declarative interface for creating command line tools"
  2. Boost 1.47.0 (or newer) "provides peer-reviewed portable C++ source libraries"
  3. CERN ROOT "is an object oriented framework for large scale data analysis"
  4. doxypy 0.4.2 "is an input filter for Doxygen"
  5. Eigen 3.2.2 "is a C++ template library for linear algebra"
  6. PyYAML 3.10 "is a YAML parser and emitter for Python"
  7. PyXB 1.2.4 "is a Python library for XML Schema Bindings"

Licensing

License information regarding MADlib and included third-party libraries can be found inside the license directory.

Release Notes

Changes between MADlib versions are described in the ReleaseNotes.txt file.

Papers and Talks

Related Software

  • PivotalR - PivotalR also lets the user run the functions of the open-source big-data machine learning package MADlib directly from R.
  • PyMADlib - PyMADlib is a python wrapper for MADlib, which brings you the power and flexibility of python with the number crunching power of MADlib.
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