Hadoop

Website

hadoop.apache.org

$ Details

Categories

#Databases #Relational Databases #Big Data #NoSQL Databases

Apache Kylin

Website

kylin.apache.org

$ Details

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Categories

#Databases #Big Data #Relational Databases #Data Warehousing

Hadoop features and specs

• Scalability
  Hadoop can easily scale from a single server to thousands of machines, each offering local computation and storage.
• Cost-Effective
  It utilizes a distributed infrastructure, allowing you to use low-cost commodity hardware to store and process large datasets.
• Fault Tolerance
  Hadoop automatically maintains multiple copies of all data and can automatically recover data on failure of nodes, ensuring high availability.
• Flexibility
  It can process a wide variety of structured and unstructured data, including logs, images, audio, video, and more.
• Parallel Processing
  Hadoop's MapReduce framework enables the parallel processing of large datasets across a distributed cluster.
• Community Support
  As an Apache project, Hadoop has robust community support and a vast ecosystem of related tools and extensions.

Possible disadvantages of Hadoop

• Complexity
  Setting up, maintaining, and tuning a Hadoop cluster can be complex and often requires specialized knowledge.
• Overhead
  The MapReduce model can introduce additional overhead, particularly for tasks that require low-latency processing.
• Security
  While improvements have been made, Hadoop's security model is considered less mature compared to some other data processing systems.
• Hardware Requirements
  Though it can run on commodity hardware, Hadoop can still require significant computational and storage resources for larger datasets.
• Lack of Real-Time Processing
  Hadoop is mainly designed for batch processing and is not well-suited for real-time data analytics, which can be a limitation for certain applications.
• Data Integrity
  Distributed systems face challenges in maintaining data integrity and consistency, and Hadoop is no exception.

Apache Kylin features and specs

• High Query Performance
  Apache Kylin is designed for high-performance, low-latency analytics on large datasets. Its OLAP engine pre-computes and stores aggregated queries, which speeds up query responses significantly.
• Scalability
  Kylin can handle massive volumes of data, making it suitable for large scale data warehousing needs. It is designed to scale out by distributing the workload across a cluster of servers.
• Integration with Hadoop Ecosystem
  Kylin integrates seamlessly with the Hadoop ecosystem, leveraging tools like Hive, HBase, and Spark to facilitate data processing and storage, thereby enhancing its functionality and compatibility.
• Support for Multi-dimensional Analysis
  It provides strong multidimensional analysis capabilities, allowing for complex queries using well-known BI tools like Tableau and Power BI.

Possible disadvantages of Apache Kylin

• Complex Setup
  Setting up and configuring Apache Kylin can be complex and time-consuming, requiring a deep understanding of the Hadoop ecosystem and its components.
• Resource Intensity
  The pre-computation of data cubes and their storage can be resource-intensive, consuming significant memory and storage capacity.
• Limited Flexibility in Querying
  Pre-aggregated cube-based analysis may not cover all ad-hoc queries. Kylin's strength lies in pre-aggregated queries but may fall short in handling highly dynamic, on-the-fly queries.
• Maintenance Overhead
  Maintaining Kylin’s precomputed cubes can become cumbersome, particularly as data evolves or changes frequently, requiring updates or recalculations of cubes.

What is Big Data and Hadoop?

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