GFS: The Google File System
GFS: The Google File System
GFS: The Google File System
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• Holds all metadata:<br />
Master Server<br />
– Namespace (directory hierarchy)<br />
Holds – Access all metadata control information RAM; very (per-file) fast<br />
operations – Mapping on from file files system to chunks metadata<br />
– Current locations of chunks (chunkservers)<br />
• Delegates consistency management<br />
• Garbage collects orphaned chunks<br />
• Migrates chunks between chunkservers