Cooperative local repair in distributed storage

Ankit Singh Rawat, Arya Mazumdar, Sriram Vishwanath

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

Erasure-correcting codes, which support local repair of codeword symbols, have attracted substantial attention recently for their application in distributed storage systems. This paper investigates a generalization of the usual locally repairable codes. In particular, this paper studies a class of codes with the following property: any small set of codeword symbols can be reconstructed (repaired) from a small number of other symbols. This is referred to as cooperative local repair. The main contribution of this paper is bounds on the trade-off of the minimum distance and the dimension of such codes, as well as explicit constructions of families of codes that enable cooperative local repair. Some other results regarding cooperative local repair are also presented, including an analysis for the well-known Hadamard/Simplex codes.

Original languageEnglish (US)
Article number107
Pages (from-to)1-17
Number of pages17
JournalEurasip Journal on Advances in Signal Processing
Volume2015
Issue number1
DOIs
StatePublished - Dec 1 2015

Keywords

  • Codes on graphs
  • Coding for distributed storage
  • Cooperative repair
  • Locally repairable codes

Cite this