GFS - Computer Science & Engineering

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Performance (Real-world Cluster) Performance (Real-world Cluster) • Many computers at each cluster (227, 342!) • On average, cluster B file size is triple cluster A file size. • Metadata at chunkservers: • Chunk checksums. • Chunk Version numbers. • Metadata at master is small (48, 60 MB) -> master recovers from crash within seconds.
Performance (Real-world Cluster) Performance (Real-world Cluster) • Many more reads than writes. • Both clusters were in the middle of heavy read activity. • Cluster B was in the middle of a burst of write activity. • In both clusters, master was receiving 200- 500 operations per second -> master is not a bottleneck.
Page 1 and 2: The Google File System By Sanjay Gh
Page 3 and 4: Design Motivations 1. Fault-toleran
Page 5 and 6: GFS Architecture What is a master?
Page 7 and 8: And now for the Meat… Read Algori
Page 9 and 10: Read Algorithm (Example) Indexer 1
Page 11 and 12: Write Algorithm Primary Buffer Chun
Page 13 and 14: Write Algorithm 6. Primary determin
Page 15 and 16: Overview • Design Motivations •
Page 17: Performance (Test Cluster) Performa

GFS - Computer Science & Engineering

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