Redistribute intermediate table default not by rand()

[liuzhixin]

Hi kylin team:

Version: Kylin2.5-hadoop3.1 for hdp3.0
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Step: Redistribute intermediate table
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DISTRIBUTE BY is that:
INSERT OVERWRITE TABLE table_intermediate SELECT * FROM table_intermediate 
DISTRIBUTE BY Field1, Field2, Field3;
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Not DISTRIBUTE BY RAND()
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Is this default DISTRIBUTE BY Field1, Field2, Field3? how to DISTRIBUTE BY 
RAND()?

Best wishes.