Before starting the data transfer using mapreduce job, sqoop takes a long time to retrieve the minimum and maximum values of columns mentioned in –split-by parameter. How can we make it efficient?

Before starting the data transfer using mapreduce job, sqoop takes a

1.	Before starting the data transfer using mapreduce job, sqoop takes a long time to retrieve the minimum and maximum values of columns mentioned in –split-by parameter. How can we make it efficient?
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