Question: A spark module for structured data processing is called Spark RDD. True False Spark SQL is used to execute SQL queries. True False To write
A spark module for structured data processing is called Spark RDD.
True
False
Spark SQL is used to execute SQL queries.
True
False
To write SQL queries, you first need to either create a 'sqlContext' or a 'SparkSession.'
True
False
Spark dataframe is not a distributed collection of data, while python pandas dataframe is distributed.
True
False
You should always convert a spark dataframe into a Python pandas dataframe to run an analysis.
True
False
Let us assume spark_df is a spark dataframe with age and gender columns.
What will the below code return?
spark_df.select('gender').where('age > 50').show()
It will return only the gender column for people older than 50 years old
None of the options
It will return only the age column for people older than 50 years old
It will return both the gender and the age columns for people older than 50 years old
filter() and where() methods can be used interchangeably as they both perform the same tasks.
True
False
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