Optimistic locking in a distributed file system replication environment

Described is optimistic locking in a distributed file system replication environment, in which a replica machine (e.g., a replicated file server) sends an optimistic lock to other replica machines when a file is opened for write access. Other replica machines that receive the optimistic lock prevent...

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1. Verfasser:	FATHALLA DIAA E
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING PHYSICS
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creator	FATHALLA DIAA E
description	Described is optimistic locking in a distributed file system replication environment, in which a replica machine (e.g., a replicated file server) sends an optimistic lock to other replica machines when a file is opened for write access. Other replica machines that receive the optimistic lock prevent read-write opening of the file until the file is unlocked, thereby preventing many conflicts. Acknowledgements are not required by the locking replica. Of the reduced number of conflicts, many of those conflicts may be detected and thus handled before the file is closed, while conflicts detected after close may be handled via conventional conflict resolution techniques, e.g., last-writer wins.
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Other replica machines that receive the optimistic lock prevent read-write opening of the file until the file is unlocked, thereby preventing many conflicts. Acknowledgements are not required by the locking replica. 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Other replica machines that receive the optimistic lock prevent read-write opening of the file until the file is unlocked, thereby preventing many conflicts. Acknowledgements are not required by the locking replica. Of the reduced number of conflicts, many of those conflicts may be detected and thus handled before the file is closed, while conflicts detected after close may be handled via conventional conflict resolution techniques, e.g., last-writer wins.</abstract><oa>free_for_read</oa></addata></record>
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language	chi ; eng
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subjects	CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING PHYSICS
title	Optimistic locking in a distributed file system replication environment
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