Lesson plan

CloudStore

CloudStore (KFS, previously Kosmosfs) was Kosmix's C++ implementation of the Google File System. It parallels the Hadoop project, which is implemented in the Java programming language. CloudStore supports incremental scalability, replication, checksumming for data integrity, client side fail-over and access from C++, Java and Python. There is a FUSE module so that the file system can be mounted on Linux. In September 2007, Kosmix published Kosmosfs as open source. The last commit activity was in 2010. The Google Code page for Kosmosfs now points to the Quantcast File System on GitHub which is the successor to KFS. A former project on SourceForge used the name CloudStore in 2008.

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Article summary

CloudStore (KFS, previously Kosmosfs) was Kosmix's C++ implementation of the Google File System. It parallels the Hadoop project, which is implemented in the Java programming language. CloudStore supports incremental scalability, replication, checksumming for data integrity, client side fail-over and access from C++, Java and Python. There is a FUSE module so that the file system can be mounted on Linux. In September 2007, Kosmix published Kosmosfs as open source. The last commit activity was in 2010. The Google Code page for Kosmosfs now points to the Quantcast File System on GitHub which is the successor to KFS. A former project on SourceForge used the name CloudStore in 2008.

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Discussion questions

  1. Summarise the article in your own words. Which single claim would you verify first, and why?
  2. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
  3. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

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Key claims and bibliography are generated from the same tracked claims and sources as the article page.