Apache Cassandra

Website

cassandra.apache.org

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Categories

#Databases #NoSQL Databases #Relational Databases #Big Data

Apache Mahout

Website

mahout.apache.org

$ Details

Categories

#Development #Data Science And Machine Learning #Data Dashboard #OS & Utilities

Apache Cassandra features and specs

• Scalability
  Apache Cassandra is designed for linear scalability and can handle large volumes of data across many commodity servers without a single point of failure.
• High Availability
  Cassandra ensures high availability by replicating data across multiple nodes. Even if some nodes fail, the system remains operational.
• Performance
  It provides fast writes and reads by using a peer-to-peer architecture, making it highly suitable for applications requiring quick data access.
• Flexible Data Model
  Cassandra supports a flexible schema, allowing users to add new columns to a table at any time, making it adaptable for various use cases.
• Geographical Distribution
  Data can be distributed across multiple data centers, ensuring low-latency access for geographically distributed users.
• No Single Point of Failure
  Its decentralized nature ensures there is no single point of failure, which enhances resilience and fault-tolerance.

Possible disadvantages of Apache Cassandra

• Complexity
  Managing and configuring Cassandra can be complex, requiring specialized knowledge and skills for optimal performance.
• Eventual Consistency
  Cassandra follows an eventual consistency model, meaning that there might be a delay before all nodes have the latest data, which may not be suitable for all use cases.
• Write-heavy Operations
  Although Cassandra handles writes efficiently, write-heavy workloads can lead to compaction issues and increased read latency.
• Limited Query Capabilities
  Cassandra's query capabilities are relatively limited compared to traditional RDBMS, lacking support for complex joins and aggregations.
• Maintenance Overhead
  Regular maintenance tasks such as node repair and compaction are necessary to ensure optimal performance, adding to the administrative overhead.
• Tooling and Ecosystem
  While the ecosystem for Cassandra is growing, it is still not as extensive or mature as those for some other database technologies.

Apache Mahout features and specs

• Scalability
  Apache Mahout is designed to handle large data sets, leveraging Hadoop to process data in parallel across distributed computing clusters, which allows for scaling as data size increases.
• Library of Algorithms
  Mahout offers a substantial collection of pre-built machine learning algorithms for clustering, classification, and collaborative filtering, making it easier to implement standard ML tasks without developing them from scratch.
• Integration with Hadoop
  Seamless integration with the Hadoop ecosystem enables Mahout to efficiently process and analyze large-scale data directly within a Hadoop cluster using MapReduce.
• Open Source
  As an open-source project under the Apache Software Foundation, Mahout benefits from continuous improvements and community support, providing transparency and flexibility for users.
• Focus on Math
  Mahout emphasizes mathematically sound algorithms, ensuring accuracy and robustness in machine learning models, backed by a foundation in linear algebra.

Possible disadvantages of Apache Mahout

• Complexity
  Although powerful, Mahout can be complex and difficult to use for beginners, as it requires understanding of both Hadoop and the underlying machine learning algorithms.
• Limited Deep Learning Capabilities
  Mahout is primarily focused on traditional machine learning techniques and lacks support for more modern deep learning frameworks, which may limit its applicability for certain advanced use cases.
• Declining Popularity
  Although once well-regarded, Mahout has seen a decline in popularity with more users favoring newer tools such as Apache Spark's MLlib, which offer improved performance and a broader range of capabilities.
• Setup Overhead
  Setting up and configuring a Hadoop environment to run Mahout can be a non-trivial task, requiring considerable effort and resources, particularly in smaller projects or organizations without existing Hadoop infrastructure.
• API Inconsistency
  Over time, the API has undergone changes which can cause compatibility issues or require significant code refactoring when upgrading to newer versions of Mahout.

Course Intro | DS101: Introduction to Apache Cassandra™

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Apache Mahout Tutorial-1 | Apache Mahout Tutorial for Beginners-1 | Edureka

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