Tag: Spark_Interview
Returning the last value in a group during aggregation in PySpark
pyspark.sql.functions.last PySpark’s last() function is part of the PySpark SQL module, and it’s used to return the last value in…
PySpark : Converting the first letter of each word in a string to uppercase and the rest to lowercase using PySpark
PySpark’s initcap() function is used to convert the first letter of each word in a string to uppercase and the…
PySpark to count the number of elements in RDDs, DataFrames and DataSets
PySpark count() is a method applied to RDDs (Resilient Distributed Datasets), DataFrames, and DataSets in PySpark to count the number…
Inverting the bits of an integer, changing all ‘0’ bits to ‘1’ and vice versa using PySpark : bitwiseNOT
BitwiseNOT is a fundamental bitwise operation that inverts the bits of an integer, changing all ‘0’ bits to ‘1’ and…
Calculating the average of a set of numerical values in PySpark – avg – Examples included
PySpark’s avg function is designed for one of the most common data analysis tasks – calculating the average of a…
PySpark’s atan2 function : To solve complex mathematical problems in distributed data processing.
pyspark.sql.functions.atan2 In this comprehensive guide, we will delve into the world of PySpark’s atan2 function – a mathematical gem that…
Computing the Levenshtein distance between two strings using PySpark – Examples included
pyspark.sql.functions.levenshtein The Levenshtein function in PySpark computes the Levenshtein distance between two strings – that is, the minimum number of…
Computing the number of characters in a given string column using PySpark: length
PySpark’s length function computes the number of characters in a given string column. It is pivotal in various data transformations…
Returning the smallest value from a set of columns in PySpark – least
pyspark.sql.functions.least The least function in PySpark returns the smallest value from a set of columns. It is often used in…
Computing the kurtosis value of a numeric column in a DataFrame in PySpark-kurtosis
The kurtosis function in PySpark aids in computing the kurtosis value of a numeric column in a DataFrame. Kurtosis gauges…
