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