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Quote: direct access to 64MB chunks with cached metadata; few master communications, persistent TCB connection to chunkserver, all metadata in master's memory
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file cache
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Neither the client nor the chunkserver caches file … (Clients do cache metadata, though) … [p. 3] We have chosen 64 MB [for chunk size] … [A large chunk size] reduces clients' need to interact with the … master for chunk location information. … Even for small random reads, the client can … [a client may keep] a persistent TCP connection to the chunkserver … Third, [a large chunk size] reduces the size of the metadata … All metadata is kept in the master's memory … [typically 50-100 MB of metadata]. … it is easy and efficient for the master … Google-1 Google-2
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Topic: file cache (23 items)