cloud_at_work:work_programme:work_programme_2011:replication_2

Dynamic Replicas Contraction in BlobSeer

  • PUB Student: Alexandra Firica
  • Inria Advisor: Alexandru Costan

Description

Until recently, BlobSeer used a static replication factor associated with stored data for fault tolerance purposes. Users were able to set this factor when writing new data into the system, but this couldn't be changed later to reflect the run-time environment. Recent work addressed this issue by allowing a dynamic increase of the replication factor, for some data incurring increased accesses, as detected in real-time by a monitoring framework.

The goal of this project is to enhance
 the
 existing
 data
 replication
 module
,
 by
 adding
 the
 facility
 of
 adaptively
 decreasing
 the
 replication
 factor. The decision to contract the number of replicas relies on real-time monitoring of the system with MonALISA. Thus,
 the
 adaptive
 replication
 module
 will
 be
 able
 to 
maintain,
 increase 
as 
well 
as 
decrease 
the 
number 
of 
replicas.


More details: Thesis


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