METHOD FOR AUTOMATED SCALING OF MASSIVE PARALLEL PROCESSING (MPP) DATABASE

摘要

It can repartition/rebalance in MPP (MPP) database, while keep passing through staged migration process online. Migration may include the first order and the second level stage by stage. During the first stage, the existing partitioned resources of entry are reassigned to new partition and catalogue and update so that the entry redistributed has existing subregion and new partition so that query entries again are directed toward existing subregion and subregion. During second stage, entry being redistributed from existing zoned migration to new partition, is completed in migration, catalogue Is re associated entry, which updates to migrate newly to inquire with new partition, is directed toward the subregion.