HintsToday
Hints and Answers for Everything
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- what APIs are, why they exist, and how we use them in Python?
- Python Strings- complete notes + interview Q&A
- Memory Management in PySpark- CPU Cores, executors, executor memory
- Memory Management in PySpark- Scenario 1, 2
- Develop and maintain CI/CD pipelines using GitHub for automated deployment, version control
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Author: lochan2014
PIVOT Clause in Spark sql or Mysql or Oracle Pl sql or Hive QL The PIVOT clause is a powerful tool in SQL that allows you to rotate rows into columns, making it easier to analyze and report data. Here’s how to use the PIVOT clause in Spark SQL, MySQL, Oracle PL/SQL, and Hive QL:…
🚀 PySpark Architecture & Execution Engine — Complete Guide 🔥 1. Spark Evolution Recap ⚔️ 2. Spark vs Hadoop (Core Comparison) Feature Hadoop MapReduce Apache Spark Engine Disk-based In-memory Languages Java-only Scala, Python, R, SQL Iterative Support Poor (writes to disk) Native (in-memory) Speed Slow (I/O bound) Fast (RAM usage) Ecosystem Limited Unified stack 🧱…
In Apache Spark, data types are essential for defining the schema of your data and ensuring that data operations are performed correctly. Spark has its own set of data types that you use to specify the structure of DataFrames and RDDs. Understanding and using Spark’s data types effectively ensures that your data processing tasks are…