Nela's Blog

Research Paper Presentation for Mobile Computing course, MSc in Computer Science 2014 Summary extracted from the research paper , 'Advancing the State of Mobile Cloud Computing'.

Assignment on Distributed Computing Implement the solution for Byzantine generals problem as we discussed in the class. You can find more details from slides. Test you solution with 4 and 10 nodes with 1 and 2 faulty nodes respectively. You may use the support framework I have provided. See “BasicElection” class for an example. Basically you have to 1. For each participant type in the algorithm implement the interface Participant.EventListener 2. Add the participant to the system via system.createParticipant(..) 3. Then call system.bootUp(); When a message is sent, each participant receives the message via eventReceived(..). You can send messages via system.sendMessage(..) You can download the complete source here

Assignment on Distributed Computing Implement “Decentralized Algorithm” (Distributed Locks) algorithm as we discussed in the class. Some highlights of the algorithm are 1. Has many replicas of resources and many coordinators 2. Need majority vote from coordinators. Idea is to avoid the effect of failure of coordinators 3. If denied, back-off and retry Can lead to low utilization You may use the support framework I have provided. See “BasicElection” class for an example. Basically you have to 1. For each participant type in the algorithm implement the interface Participant.EventListener 2. Add the participant to the system via system.createParticipant(..) 3. Then call system.bootUp(); When a message is sent, each participant receives the message via eventReceived(..). You can send messages via system.sendMessage(..) You can download the complete source code from here .

Presentation of internal architecture and features of Cassandra based on the version 1.2 Presented at the Knowledge sharing Session in Aepona SL.

Presentation on Cassandra based on Original Research Paper by Avinash Lakshman & Prashant Malik. This is a summary extracted from the original research paper and contains the details about initial features of cassandra.