Network

Quantcast File System – high-performance, fault-tolerant, distributed file system

Quantcast File System (QFS) is a high-performance, open source, fault-tolerant, distributed file system developed to support MapReduce processing, or other applications reading and writing large files sequentially. It is an alternative to HDFS for large-scale batch data processing.

QFS consists of 3 components:

  • Metaserver – a central process metadata server that manages the directory structure and maps of files to physical storage
  • Chunk Server – the distributed component of the distributed file system. A chunk server runs on each machine that will host data, manages I/O to its hard drives, and monitors its activity and capacity
  • Client Library – a library that provides the file system API to allow applications to interface with QFS. It makes requests of the metaserver to identify which chunk servers hold (or will hold) its data, then interacts with the chunk servers directly to read and write

QFS is written in C++, operates within a fixed memory footprint, and uses direct I/O.

Features include:

  • Incremental Scalability.
  • Balancing.
  • Rebalancing.
  • Fault Tolerance.
  • Fine-tunable Replication, Striping, Recovery Mode.
  • Re-replication.
  • Data Integrity.
  • Reed-Solomon (RS) error correction.
  • Client Side Metadata Caching.
  • File Writes.
  • Leases.
  • Versioning.
  • Client Side Fail-over.
  • Direct I/O.
  • Manages its own memory within a fixed footprint.
  • Language Support.
  • Tools.
  • FUSE support on Linux.
  • Unix style permissions support.

Website: www.quantcast.com
Support: GitHub Code Repository
Developer: Quantcast
License: Apache License 2.0

QFS is written in C++. Learn C++ with our recommended free books and free tutorials.

Return to File Systems


Popular series
Free and Open Source SoftwareThe largest compilation of the best free and open source software in the universe. Each article is supplied with a legendary ratings chart helping you to make informed decisions.
ReviewsHundreds of in-depth reviews offering our unbiased and expert opinion on software. We offer helpful and impartial information.
Alternatives to Proprietary SoftwareReplace proprietary software with open source alternatives: Google, Microsoft, Apple, Adobe, IBM, Autodesk, Oracle, Atlassian, Corel, Cisco, Intuit, and SAS.
GamesAwesome Free Linux Games Tools showcases a series of tools that making gaming on Linux a more pleasurable experience. This is a new series.
Artificial intelligence iconMachine Learning explores practical applications of machine learning and deep learning from a Linux perspective. We've written reviews of more than 40 self-hosted apps. All are free and open source.
Guide to LinuxNew to Linux? Read our Linux for Starters series. We start right at the basics and teach you everything you need to know to get started with Linux.
Alternatives to popular CLI tools showcases essential tools that are modern replacements for core Linux utilities.
System ToolsEssential Linux system tools focuses on small, indispensable utilities, useful for system administrators as well as regular users.
ProductivityLinux utilities to maximise your productivity. Small, indispensable tools, useful for anyone running a Linux machine.
AudioSurveys popular streaming services from a Linux perspective: Amazon Music Unlimited, Myuzi, Spotify, Deezer, Tidal.
Saving Money with LinuxSaving Money with Linux looks at how you can reduce your energy bills running Linux.
Home ComputersHome computers became commonplace in the 1980s. Emulate home computers including the Commodore 64, Amiga, Atari ST, ZX81, Amstrad CPC, and ZX Spectrum.
Now and ThenNow and Then examines how promising open source software fared over the years. It can be a bumpy ride.
Linux at HomeLinux at Home looks at a range of home activities where Linux can play its part, making the most of our time at home, keeping active and engaged.
Linux CandyLinux Candy reveals the lighter side of Linux. Have some fun and escape from the daily drudgery.
DockerGetting Started with Docker helps you master Docker, a set of platform as a service products that delivers software in packages called containers.
Android AppsBest Free Android Apps. We showcase free Android apps that are definitely worth downloading. There's a strict eligibility criteria for inclusion in this series.
Programming BooksThese best free books accelerate your learning of every programming language. Learn a new language today!
Programming TutorialsThese free tutorials offer the perfect tonic to our free programming books series.
Linux Around The WorldLinux Around The World showcases usergroups that are relevant to Linux enthusiasts. Great ways to meet up with fellow enthusiasts.
Stars and StripesStars and Stripes is an occasional series looking at the impact of Linux in the USA.
Subscribe
Notify of
guest

This site uses Akismet to reduce spam. Learn how your comment data is processed.

0 Comments
Inline Feedbacks
View all comments