Big Data Technology & Architecture

Jul 10, 2020 · Big Data

Understanding Namenode Metadata Persistence: FsImage, EditLog, and SecondaryNamenode

This article explains how Hadoop's Namenode persists metadata using FsImage and EditLog, describes the checkpoint process during startup, and details the role of SecondaryNamenode in merging these files for efficient recovery, while also encouraging readers to like and share the content.