T. Byun et S. Moon, NONBLOCKING 2-PHASE COMMIT PROTOCOL TO AVOID UNNECESSARY TRANSACTION ABORT FOR DISTRIBUTED SYSTEMS, Journal of systems architecture, 43(1-5), 1997, pp. 245-254
Processing a distributed transaction takes more time than processing a
local transaction, since processing of a distributed transaction requ
ires multiple phases with respect to its commitment to keep a distribu
ted transaction consistent. For distributed systems, since the commit
cost could be high due to volume of network messages and network delay
s, it is required to optimise commit protocol to improve transaction t
hroughput. In order to improve the throughput of transaction processin
g, we concentrate on the nonblocking property without loss of consiste
ncy, including the number of message exchanges, recovery time. Blockin
g is a critical problem in transaction processing with respect to thro
ughput, since blocked transactions interfere the progress of other tra
nsactions. Abortion of the commitable transaction makes the system deg
rade, and it becomes serious if there are many transactions at the fai
led sites due to the unnecessary restart overhead. Therefore, in the v
iew of efficiency, it is essentially required to develop a commit prot
ocol that has not only few message exchanges but also low ratio of tra
nsaction aborts.