PySpark Recipes by Raju Kumar Mishra

Author:Raju Kumar Mishra
Language: eng
Format: epub
Publisher: Apress, Berkeley, CA

Finally, we have calculated the mean and the count value .

Note

The following is a good tutorial about working with

reduceByKey(): http://stackoverflow.com/questions/30145329/reducebykey-how-does-it-work-internally .

Recipe 5-3. Join Data

Problem

You want to join data.

Solution

We have been given two tables: a Students table (Table 5-2) and a Subjects table (Table 5-3).

Table 5-2.Students

Table 5-3.Subjects

You want to perform the following on the Students and Subjects tables: Inner join

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