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Comment: Added project objectives

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This presentation provides an overview of the project: https://ibm.box.com/s/ofr6eelz39up4wkj9qlihsf55fsh2hft.

 

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Project objectives

Figure 1 summarized the objectives of the new open metadata and governance function for Apache Atlas:  Automation, Business Value and Connectivity.

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Figure 1: The ABC of open metadata and governance

  • Automation
    • Open metadata and governance provides an API for components that capture metadata from data platforms as data sources are created and changed.  This metadata is stored in the metadata repository and results in notifications to alert governance and discovery services about the new/changed data source.
    • It provides frameworks and servers to host bespoke components that automate the capture of detailed metadata and the actions necessary to govern data and its related assets.  This includes:
      • A discovery server that manages discovery services for analyzing and capturing metadata about new data sources.
      • A stewardship server that manages stewardship services for resolving issues detected during the governance and use of data.
  • Business Value
    • Open metadata and governance provides specialized access services and user interfaces for key data roles such as CDO, Data Scientist, Developer, DevOps Operator, Asset Owner, Applications.  This enables metadata to directly support the work of people in the organization.
    • The access services can also be used by tools from different vendors to deliver business value with open metadata. 
  • Connectivity
    • Finally connectivity enables a peer-to-peer Metadata Highway offering open metadata exchange, linking and federation between heterogeneous metadata repositories.

 

 

 

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Technical components

The open metadata and governance project is divided into the following pieces:

  • Common types for open metadata - these types are built from the Apache Atlas type system and define the types stored in the graph database as well as payloads for notifications and APIs
  • Open Metadata Repository Services (OMRS) - Open metadata repository APIs and notifications to enable metadata repositories to exchange metadata in a peer-to-peer metadata repository cluster.  This capability is located in each metadata repository and collectively they enable what is referred to as the "metadata highway".
  • Open Metadata Access Services (OMAS) - Consumer-centric APIs and notifications for specific classes of tools and applications.  The OMAS services call the OMRS to access metadata from any open metadata repository.
  • New frameworks to complement the Atlas Hooks and Bridges
    • Open Connector Framework (OCF) - provides factories for connectors with access APIs for data resources and metadata together.  The OMRS is also built as a set of metadata repository connectors and the OMAS services use the OCF to connect to the appropriate OMRS connector.
    • Open Discovery Framework (ODF) - provides management for automated processes and analytics to analyze the content of data resources and update the metadata about them.
    • Governance Action Framework (GAF) - provides audit logging and governance enforcement services for implementing enforcement points in data engines, security managers such as Apache Ranger, and APIs.  It also adds stewardship services for analyzing audit logs and resolving issues identified in exceptions raised by the enforcement services.
  • Open Metadata Graph Repository - A set of stores linked together with a graph database.  These stores provide linkage between business, technical and operational metadata along with logs for auditing, operational lineage, metering and exception management..
  • Open Lineage Services - Services for collecting and querying lineage information across multiple heterogeneous metadata repositories

 

Figure 1 2 shows how this could look if it were implemented in Apache Atlas.

 

 

Figure 12: Open Metadata and Governance Components implemented in Apache Atlas

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