Trace: • steganography • secondary_name_node

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Table of Contents

Secondary name node
- Uses
- How it works

Secondary name node

NOT HIGH AVAILBILITY

Uses

“System restore” for Name node
Resopnsibole of keeping less dataloss if the Name node is failed

How it works

Structure
- fsImage
- Edit Logs
Every hour copy Edit log and fsImage from Name node
If Name node failed - marges fsImage with Edit log of Secondary name node and reconstruct the Name node

learn/bigdata/secondary_name_node.1407433567.txt.gz · Last modified: 2022/01/03 16:03 (external edit)

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