Most of the interview questions were not that hard.
Big Data Intern Interview Questions
1,784 big data intern interview questions shared by candidates
Explain the architectural differences between HBase, Cassandra and MongoDB
Explain the architectural differences between HBase, Cassandra and MongoDB
different ways to implement singleton comparable vs comparator questions on hashmap implementation wap to find anagrams with complexity wap to rotate linked list with complexity wap suitable to sort this array - arr[1,0,1,1,0,1,0] difference between sqlcontext & hivecontext spark features find 0 size file in unix count number of files in a directory in unix simple SQL queries to join two tables
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SQL questions
Design Facebook graph search with basic implementation. Create/ implement a chat server, searching a rotated sorted tree.
2. DBMS (Database Management System) Goal: Check your knowledge of databases, queries, and design. Common Topics: SQL Queries → SELECT, JOIN, GROUP BY, HAVING Normalization → 1NF, 2NF, 3NF Transactions → ACID properties Indexes → Types, usage, pros/cons ER Diagrams → Designing schemas Example Question: “Write an SQL query to find the 2nd highest salary from the Employee table.” “Explain the difference between INNER JOIN and LEFT JOIN.” “What are ACID properties in DBMS?” Tip: Even if you forget exact SQL syntax, explain the logic clearly.
Behavioural Interviews have the normal situational questions, Technical Case Interview was quite relevant to the work I am doing. It is good to stay prepared.
Formatos soportados por Spark y sus indicaciones para cada caso.
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