Optimal Repair Layering for Erasure-Coded Data Centers
Citations Over TimeTop 10% of 2017 papers
Abstract
Repair performance in hierarchical data centers is often bottlenecked by cross-rack network transfer. Recent theoretical results show that the cross-rack repair traffic can be minimized through repair layering, whose idea is to partition a repair operation into inner-rack and cross-rack layers. However, how repair layering should be implemented and deployed in practice remains an open issue. In this article, we address this issue by proposing a practical repair layering framework called DoubleR . We design two families of practical double regenerating codes (DRC), which not only minimize the cross-rack repair traffic but also have several practical properties that improve state-of-the-art regenerating codes. We implement and deploy DoubleR atop the Hadoop Distributed File System (HDFS) and show that DoubleR maintains the theoretical guarantees of DRC and improves the repair performance of regenerating codes in both node recovery and degraded read operations.
Related Papers
- → Effect of Spherical Crustal Layering (SH Waves)(1968)3 cited
- → Experiments on the Layering of Hops II. Layering Young Plants(1948)
- The optimium technique on upper air layering rooting of Salacca zalacca(2014)
- NORMAL SECTIONAL CALCULATION OF REINFORCED LAYERING OBJECT OF SMALL LAYERING BLOCK WITH CORE GROUTED CONCRETE(2001)
- → EFFECT OF TIME AND IBA CONCENTRATION ON THE PERFORMANCE OF BAY LEAF LAYERING(2021)