Tag: big_data_interview
Hive Transactional Table vs. Non-Transactional Table
Before we explore the differences between transactional and non-transactional tables, let’s grasp the basic concepts of Hive tables. Hive Table…
HiveServer1 vs. HiveServer2: A Comprehensive Comparison
Before diving into the comparison, let’s briefly understand what Hive servers are and their role in the Hive ecosystem. HiveServer1…
Hive Script vs. Hive Query: Unraveling the Differences
This article aims to shed light on this topic, offering clarity and real-world examples to illustrate the contrasts. Understanding Hive…
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…
