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Hive common join Vs. JoinLineageMahsa Mofidpoor 2012-07-08, 18:34
Hello,
As far as I know, a join operation can be converted to a common join at the physical optimization stage, if the correspondent variable is set to true . If not, join will be performed by JoinLineage, am I right? What is exactly the difference between these two approaches? I appreciate your help in advance. Mahsa |