Tag: interview_qa
Advantages of using Parquet file
Parquet is a columnar storage format that is designed to work with big data processing frameworks like Apache Hadoop and…
What Python data type does the Pymongo function call Find_one () return select one?
The find_one() function in the PyMongo library, which is used to interact with MongoDB databases in Python, returns a dictionary-like…
Documents required for Technical Software Architects
Software architects use a variety of documents to design, plan, and communicate the architecture of a software system. Some common…
What is the use of “Content-type: application/json” in header in AWS API Gateway?
You must include “Content-type: application/json” in the message header when submitting a POST request with a JSON body to my…
Does Snowflake support indexes which is supported by other databases ?
The answer is NO. Indexes are not utilized or supported by Snowflake. By keeping extensive metadata in each of its…
How to round the given value to scale decimal places using HALF_EVEN rounding in Spark – PySpark
bround function bround function returns the rounded expr using HALF_EVEN rounding mode. That means bround will round the given value…
OOPS interview questions for freshers and experienced
1. What is OOPS? OOPS is abbreviated as Object Oriented Programming system in which programs are considered as a collection…
Docker Interview Questions and Answers for Experienced and Freshers
1. Can you explain how Docker is advantageous over Hypervisors? Docker is advantageous in the below ways 1. It is…
Apache Storm interview questions
1. What is Apache Storm? Apache Storm is a free and open source distributed realtime computation system. Apache Storm makes…
Apache PIG interview questions
1. What is pig? Pig is a Apache open soucre project which run on top of hadoop,provides engine for data…