Big Data Architecture Additional Layers
Duration: 6 min
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The video presents a lecture on the cross-layer processes in big data architecture, focusing on four major processes: data source connection, governance, systems management, and quality of service. The instructor begins by explaining the consumption layer, which receives analysis results and presents them to users. The main content covers the four processes. First, 'Connecting to data sources' is discussed, emphasizing the need for connectors and adapters to efficiently link various data formats and systems, including sensors, databases, and social media. Second, 'Governing big data' is explained, highlighting the importance of privacy and security, and the use of compliance tools and software, with a mention of SLAs (Service Level Agreements) with cloud providers. Third, 'Managing systems' is covered, noting that big data architectures are built on large-scale distributed clusters and require continuous monitoring via central management consoles, even in the cloud. Finally, 'Protecting Quality of service' is introduced as a framework for defining data quality, compliance, and ingestion policies, with an example of a cloud provider using QoS to route data to virtual clusters based on service levels. The lecture concludes with a slide showing the course outline, which includes topics like Big Data Characteristics, Types of Big Data, and Big Data Architecture.
Chapters
0:00 – 2:00 00:00-02:00
The video starts with a diagram illustrating the data flow from a data source through various processing stages like storage, analysis, and consumption. The instructor explains the 'Consumption layer,' which receives analysis results and presents them to the appropriate output layer. The lecture then transitions to the main topic: four major processes that operate across layers in a big data environment. The first process, 'Connecting to data sources,' is introduced, with the text stating that fast data ingress requires connectors and adapters to efficiently connect different storage systems, protocols, networks, and data formats, including data from sensors, databases, and social media.
2:00 – 5:00 02:00-05:00
The instructor continues to explain the four major processes. The second process, 'Governing big data,' is discussed, emphasizing the need for provisions for privacy and security. The text mentions that organizations can use native compliance tools, invest in specialized compliance software, or sign service level security agreements with their cloud Hadoop provider. The instructor highlights that compliance policies must operate from the point of ingestion through processing, storage, analysis, and deletion or archive. The third process, 'Managing systems,' is introduced, explaining that big data architecture is built on large-scale distributed clusters and requires continuous monitoring and addressing of system health via central management consoles. The text also notes that even in the cloud, IT must establish and monitor SLAs with cloud providers.
5:00 – 6:23 05:00-06:23
The fourth and final process, 'Protecting Quality of service,' is introduced. The text defines QoS as a framework that supports defining data quality, compliance policies, ingestion frequency, and filtering data. An example is given of a public cloud provider using QoS-based data storage scheduling to improve data availability and response time by automatically routing ingested data to predefined virtual clusters based on QoS service levels. The video concludes with a slide showing the course outline, which includes topics such as Introduction, Big Data Characteristics, Types of Big Data, Big Data Architecture, Introduction to Map-Reduce and Hadoop, and Hadoop File System (HDFS).
The lecture provides a comprehensive overview of the four essential cross-layer processes in a big data architecture. It begins by establishing the context of the consumption layer and then systematically details each process. The first process, data source connection, focuses on the technical challenge of ingesting diverse data types. The second, governance, addresses the critical non-functional requirements of privacy and security, emphasizing the need for compliance tools and SLAs. The third, systems management, highlights the operational complexity of managing large-scale distributed systems, even in a cloud environment. The final process, quality of service, introduces a framework for ensuring data quality and performance. Together, these four processes form a holistic approach to building a robust and reliable big data system, moving beyond just the technical architecture to include governance, management, and service quality.