Pyspark learning tips

Source: Internet
Author: User
Tags pyspark

Note: In pyspark, to load a local file, you must execute the first command in the format starting with "file: //" and the result is not displayed immediately because, spark uses an inert mechanism. Only operations of the action type are executed from start to end. Therefore, we will execute an action-type statement to see the result.

Eg:

1Lines = SC. textfile ('File: // usr/local/spark/mycode/RDD/word.txt')2Lines. First ()

 

Pyspark learning tips

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