Checkpointing and Restarting Protocols on Object-based Systems (特集:マルチメディアネットワークシステム)

概要

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In object-based systems, multiple objects cooperate with each other by exchanging messages. The objects may suffer from faults. If some object o is faulty, o is rolled back to the checkpoint c and objects which have received messages from o are also required to be rolled back to the checkpoints which is consistent with c. In this paper, we discuss how to take checkpoints in object-based systems. Object-based checkpoints are consistent in the object-based system but may be inconsistent according to the traditional message-based definition. We present a protocol for taking object-based checkpoints among objects. An object to take a checkpoint in the traditional message-based protocol does not take a checkpoint if the current checkpoint is object-based consistent with the other objects. The number of checkpoints can be reduced by the object-based protocol.
一般社団法人情報処理学会の論文
2001-02-15