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INCREMENTAL RECLUSTERING BASED ON LOCAL MAXIMA OF PARTITION OVERLAP
INCREMENTAL RECLUSTERING BASED ON LOCAL MAXIMA OF PARTITION OVERLAP
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机译：基于局部最大值的分区重叠的增量重新升级
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摘要
Disclosed herein are systems and methods for incremental reclustering of database tables based on local maxima of partition overlap. In an embodiment, a database platform makes a determination, based on one or more incremental-reclustering criteria, to incrementally recluster a database table, which has a clustering key and which is stored across a plurality of partitions. In response to making the determination, the database platform selects a subset of the partitions, and at least incrementally reclusters the selected subset. The selecting of the subset includes identifying a local maximum of a quantity of overlapping partitions in the plurality of partitions with respect to a domain of the clustering key of the table, where the overlapping partitions overlap with respect to the clustering key.
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