IOCP: Implementation of Optimized Commit Protocol

Atomic Commit Protocols (ACP) are used to maintain atomicity in distributed systems. There are protocols available to minimize the overhead between the coordinator and participants, some are to minimize blocking while some to release the locks acquire by different participants. Optimized Two phase Commit (O-2PC) Protocol has been proposed to optimize the performance of 2PC based of deferred and immediately consistency constraints by overlapping the voting phase where initiation of protocol is done from participant side. But no simulator is currently available. This paper Implementation of Optimized Commit Protocol (IOCP) is an effort to allow simulating the performance of O-2PC empirically to consider the indirect costs that is not possible to calculate analytically. The simulator is developed using Java Network Programming. This simulation tool also provides facility to compare different commit protocols based on some performance parameters.