HDFS - EditLog (transaction log)

About

The NameNode uses a transaction log called the EditLog to persistently record every change that occurs to file system metadata.

Articles Related

Example

The NameNode to insert a record into the EditLog when

• a new file is created
• the replication factor of a file is changed

Management

Offline Edits Viewer

Offline Edits Viewer is a tool to parse the Edits log file.

Location

The NameNode uses a file in its local host OS file system to store the EditLog.