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Plasma

Map/Reduce and distributed filesystem

This package contains two applications:

• PlasmaFS is a distributed filesystem
• Plasma MapReduce is a Map/Reduce framework on top of PlasmaFS

PlasmaFS is deployed on an arbitrary number of namenodes and datanodes. All data and metadata is replicated. ACID transactions provide data safety and clear query semantics. PlasmaFS focuses on large files and big blocksizes. It is error-resiliant and extensible.

PlasmaFS is accessible over a command-line client (plasma), NFS v3, and over its own native network API.

The namenode data is stored in PostgreSQL so you also need to install PostgreSQL servers on the namenodes.

Plasma MapReduce implements the Map/Reduce algorithm scheme. The processed files are stored in PlasmaFS filesystems.