加米谷大数据



加米谷大数据

为每个DataTable创建一个与之对应的IndexTable，通过各种途径，保证IndexTable Region与DataTable Region一一对应，并且存储在同一个RegionServer上，存储结构如图所示。最终要实现的效果是，每个IndexTable Region是对应的DataTable Region的局部索引，使用索引进行查询时，将对每个IndexTable Region进行检索，找出所有符合条件的DataTable RowKey，再根据DataTable RowKey到对应的DataTable Region中读取相应DataTable Row。


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