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RC-OCP: Reverse Coordinated Optimized Commit Protocol

RC-OCP: Reverse Coordinated Optimized Commit Protocol

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International Conference on Information Systems and Computer Networks (ISCON)

作者： Chauhan, Ganpat Singh Gupta, Mukesh Kumar Khunteta, Ajay SKIT Comp Engn Jaipur Rajasthan India PCE Comp Engn Jaipur Rajasthan India

ISBN: (纸本)9781479929818

With the growth of trends in computing and requirement for developing a reliable computing environment the need for performing tasks in distributed manner has gained much importance. Atomic commit protocols (ACP) are used to preserve the ACID property in distributed systems. Two-Phase Commit (2PC) is most widely used but the blocking of sites is undesirable as these sites may be holding locks on the resources. As alternative, non-blocking ACP has been suggested: This non-blocking protocol is Three-Phase Commit (3PC) protocol which requires an extra phase (pre-commit) to remove blocking state. The existing protocols require so many messages transfer from the coordinator to participants and vice versa during different phases and corresponding increase communication and time complexity and hold the locks acquire by different participants till the end of last phase, forcing other transactions also to be blocked just because of the objects that are locked. All the existing protocols give the same performance for both deferred and immediate consistency constraints databases. Lots of protocols are being proposed and mainly the concentration was to make the 2PC protocol non-blocking or to minimize the blocking possibilities in 2PC. There has been a renewed interest in developing and optimization of more efficient ACPs. This paper is an effort to propose a new technique to optimize atomic commit protocols by optimizing voting phase based on deferred and immediate consistency constraints. Also an attempt has been made to propose reduction in communication complexity which will require less number of messages to be shared between coordinator and participants, the cost of execution as well as time delays.

关键词： Distributed Database System Two Phase Commit Protocol (2PC) Three Phase Commit Protocol (3PC) Non-Blocking Commit Protocol deferred and immediate consistency constraints

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IOCP: Implementation of Optimized Commit Protocol

IOCP: Implementation of Optimized Commit Protocol

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IEEE International Conference on Recent Advances and Innovations in Engineering (ICRAIE)

作者： Chauhan, Ganpat Singh Gupta, Mukesh Kumar Khunteta, Ajay PCE Comp Engn Jaipur Rajasthan India SKIT Comp Engn Jaipur Jaipur Rajasthan India

ISBN: (纸本)9781479940400

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.

关键词： Distributed Database System Two Phase Commit Protocol (2PC) Optimized Two Phase Commit Protocol (O-2PC) Three Phase Commit Protocol (3PC) Non-Blocking Commit Protocol deferred and immediate consistency constraints

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