Memory footprint optimization for INodeFile object.
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Key: HDFS-1061
URL: https://issues.apache.org/jira/browse/HDFS-1061
Project: Hadoop HDFS
Issue Type: Improvement
Components: name-node
Affects Versions: 0.22.0
Reporter: Bharath Mundlapudi
Priority: Minor
Fix For: 0.22.0
I am proposing a footprint optimization to merge blockReplication and
preferredBlockSize fields into one 'long header' field in INodeFile class. This
saves 8 bytes per INodeFile object on a 64 bit JVM. This memory optimization is
transparent and changes are very minimal.
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