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HDFS Centralized Cache and block replicas

HDFS Centralized Cache and block replicas

New Contributor

In cache directives, the number of block replicas to cache are defined. What would be the benefit of caching replicas of a block? Why not cache a single copy of the block?

1 REPLY 1

Re: HDFS Centralized Cache and block replicas

New Contributor

For each block, it only caches a single copy of the block. The number of block replicas to cache is the number of replicas from different blocks.