Preserving Data Consistency through Neighbor Replication on Grid Daemon

Ahmad, Nesar; Deris, Mustafa Mat; Ahmed, Nuredin; Saman, Mohd Yazid; Norhayati, R.; Alfawaer, Zeyad M.

doi:10.3844/ajassp.2007.751.758

Cited by 6 publications

(4 citation statements)

References 10 publications

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“…However, different techniques have different reliability levels of managing replicated data. One of the simplest replication techniques for managing replicated data is called read-one write-all (ROWA) (Helal, Heddaya, & Bhargava, 1996;Noraziah, Deris, Ahmed, Saman, Norhayati, & Alfawaer, 2007). ROWA utilizes the synchronous replication mechanism.…”

Section: Introductionmentioning

confidence: 99%

“…If one of the replicas is unavailable, then an update transaction cannot be terminated. Voting in general allow writes to be recorded only at a subset (a write quorum) of the up sites, so long as reads are made to query a subset (a read quorum) that is guaranteed to overlap the write quorum (Helal, Heddaya, & Bhargava, 1996;Noraziah, Deris, Ahmed, Saman, Norhayati, & Alfawaer, 2007). However, this technique causes the communication cost for read operation is fairly expensive.…”

Section: Introductionmentioning

confidence: 99%

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Neighbor-Replica Distribution Technique Model for Availability Prediction in Distributed Interdependent Environment

Noor

Herawan

Deris

2012

International Journal of Cloud Applications and Computing

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High availability is important for large scale distributed systems. Replication provides effective ways to enhance performance, high availability and fault tolerance in distributed systems. An efficient and effective replication technique is the key to improve the availability performance. Data and processes can be replicated for failures recovery. There are currently projects successfully implemented in two-replica distribution technique (TRDT) or primary–backup technique. However, these projects have their weaknesses of increasing cost overhead and inherit irrecoverable scenarios from TRDT such as double faults when both copies of replicated components are damaged. The authors propose the Neighbor Replica Distributed Technique (NRDT) availability prediction model. Focusing on improving high availability in which it predicts future expectation of interdependent server’s availability in a distributed online system over an extended period of time. The results and discussion are explored further in the article.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Neighbor-Replica Distribution Technique Model for Availability Prediction in Distributed Interdependent Environment

Noor

Herawan

Deris

2012

International Journal of Cloud Applications and Computing

View full text Add to dashboard Cite

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“…There are many of uncertainty in medical diagnostic operations, which are derived from incomplete information or unreliability of knowledge [5][6][7]. The ontology uses to solve the knowledge management and the Bayesian network approach to deal with the uncertainty of the diagnosis.…”

Section: Introductionmentioning

confidence: 99%

Ontology-driven Bayesian Network Model for Semantic Expression

Abuazab¹,

Selamat²,

Yusoff³

et al. 2018

dtcse

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Abstract. In this paper, ontology-driven Bayesian network model is proposed using the semantic ontology knowledge base, which automatically transforms the entities of the ontology into the Bayesian network model. Brief detail of the advantage of Bayesian network is applied for solving the uncertain and non-complete information. The hypertensive ontology is constructed to prove the validity of the model. The medical diagnosis algorithm based on the ontology-driven Bayesian network model to assist the NETICA Application Programming Interface (API). The proposed model used to realize the mapping between ontology and Bayesian network, and the different probability of the condition is entered to obtain the probability that the patient is suffering from high blood pressure. The experimental results show that the model is correct and feasible, and it has good universality and portability in medical diagnosis.

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“…Data replication (Sleit et al, 2007;Noraziah et al, 2007) is one of the technique or key components in data grid to increase availability and reliability of the data. Besides that, replication method can increase the system scalability, performance and fault tolerance (Fauzi et al, 2011;Mohammed, 2007).…”

Section: Introductionmentioning

confidence: 99%

Solving Two Deadlock Cycles through Neighbor Replication on Grid Deadlock Detection Model

Zin¹,

Adzhar²,

Abdalla³

et al. 2012

Journal of Computer Science

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Abstract:A data grid is compose of hundreds of geographically distributed computers and storage resources usually locate under different places and enables users to share data and other resources. Problem statement: Data replication is one of the mechanisms in managing data grid architecture that receive particular attention since it can provide efficient access to data, fault tolerance, reduce access latency and also can enhance the performance of the system. However, during transaction deadlock may occur that can reduce the throughput by minimizing the available resources, so it becomes an important resource management problem in distributed systems. Approach: The Neighbor Replication on Grid Deadlock Detection (NRGDD) transaction model has been developed to handle two deadlock cycle problems on grid. By deploying this method, the transactions communicate with each other by passing the probe messages. The victim message has been used to detect the deadlock when the number of waiting resource by other transaction is highest and become as the cause of deadlock occurs. In addition, this transaction must be aborted to solve the problem. Results: NRGDD transaction model are able to detect and solve more than one cycle of deadlocks. Conclusion: NRGDD has resolve the deadlock problem by sending the minimum number of probes message to detect the deadlock and it can resolve the deadlock to ensure the transaction can be done smoothly.

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Preserving Data Consistency through Neighbor Replication on Grid Daemon

Cited by 6 publications

References 10 publications

Neighbor-Replica Distribution Technique Model for Availability Prediction in Distributed Interdependent Environment

Neighbor-Replica Distribution Technique Model for Availability Prediction in Distributed Interdependent Environment

Ontology-driven Bayesian Network Model for Semantic Expression

Solving Two Deadlock Cycles through Neighbor Replication on Grid Deadlock Detection Model

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