Managing replicated data
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United States of America Patent
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Aug 18, 2015
Grant Date -
Jan 22, 2015
app pub date -
Oct 8, 2014
filing date -
Nov 21, 2012
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Abstract
An approach for managing replicated data is presented. Metadata is received specifying inter-data correlation(s), inter-replica correlation(s), and data-replica correlation(s) among replicas generated for a system. A unified replication metadata model specifying the correlations is generated. Based on the inter-replica correlation(s), a proper subset of the replicas is selected. Based on the inter-replica and inter-data correlation(s), the selected proper subset of replicas is indexed to generate a unified content index. A query is received to locate a data item in at least one of the replicas. Based on the unified content index, the unified replication metadata model, and the query, candidate replica(s) and confidence score(s) indicating likelihood(s) that the candidate replica(s) include the data item are determined. Based on temporal distance(s) and percent change(s) between first and second replica(s), confidence score(s) of the second replica(s) are determined.
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