面向分布式流体系结构的多副本积极容错技术

A triple modular eager redundancy fault-tolerant technique for distributed stream architecture

随着互联网环境下计算系统规模的不断扩大,分布式流体系结构的可靠性问题面临着严峻的挑战。以多模冗余容错技术为基础,针对软错误提出了一种面向分布式流体系结构的多副本积极容错技术TREFT,利用三个程序副本进行高效的检错与纠错。在分布式流体系结构原型系统上的实验结果表明,该技术能有效提高系统的可靠性,具有较低的容错成本,平均增加10.77%的容错开销。

As computing systems continue to expand in size in the Internet environment, the reliability of the distributed stream architecture is facing serious challenges. Based on the N-modular redundancy technique, we propose a triple modular eager redundancy fault-tolerant method for the distributed stream architecture （TREFT）. The TREFT employs three program copies to run the error detection and error correction processes efficiently. Experimental results on a prototype system of the distributed stream architecture show that the TREFT could enhance the reliability of the system at very low cost, increasing the fault-tolerant cost by 10.77% on average.