Remove Big Data Skills Remove Bytes Remove Java Remove Non-relational Database
article thumbnail

100+ Big Data Interview Questions and Answers 2023

ProjectPro

Map tasks deal with mapping and data splitting, whereas Reduce tasks shuffle and reduce data. Hadoop can execute MapReduce applications in various languages, including Java, Ruby, Python, and C++. Metadata for a file, block, or directory typically takes 150 bytes. And storing these metadata in RAM will become problematic.