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07: Q62 – Q70 HDFS blocks Vs. splits & Spark partitions Interview Questions & Answers

Q62. Can you explain the difference between HDFS blocks and input splits? A62. A block is a physical representation of data, and a Split is a logical division of your data …


11: Q88 – Q91 Read-Write Vs Append-Only File Systems

Q88. How will you modify a portion of an HDFS file? A88. HDFS is an “append-only” file system. The most common use case of Hadoop data ingestion is to append new …


12: Q92 – Q97 Hadoop file formats and how to choose

Q92. What are the criteria for choosing storage file formats in Hadoop? A92. Choosing the wrong file formats can significantly increase the query times and storage spaces. Choosing a format that …


18: Q121 – Q124 Choosing between HDFS & AWS S3 for BigData projects interview Q&As

More and more organisations are adopting the policy of “Cloud first architecture” where Cloud based storages like AWS S3 plays a major role. A data lake is a storage repository that …


More HDFS & NameNode interview Q&As

Q1. What are the different ways to access files or data stored in HDFS? A1. You can access files or data stored in HDFS in many different ways. HDFS Command-Line Interface …


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