Metadata querying method and apparatus
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United States of America Patent
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Dec 27, 2016
Grant Date -
Mar 27, 2014
app pub date -
Dec 2, 2013
filing date -
Apr 10, 2012
priority date (Note) -
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Abstract
Embodiments of the present invention provide a metadata querying method and apparatus. The method includes: sampling at least one piece of first metadata from to-be-searched-for metadata; using at least a part of feature values in each piece of the sampled first metadata as an index, and searching a sparse index table preset in a memory for a corresponding container identifier; selecting, according to the number of times that a same container identifier is found, a container corresponding to a container identifier that meets a set condition; loading metadata in the selected container into a metadata cache; and searching the metadata cache for a data block that is the same as the to-be-searched-for metadata. In the embodiments of the present invention, querying performance can be improved and occupied memory space can be reduced.
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