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Bharath Mundlapudi commented on HDFS-1061: ------------------------------------------ A small correction and additional note for my comment above, ext4 uses 48 bit block addressing. I didn't want to assume power of n due to backward compatibility reasons since we don't know how hadoop customers are using preferred block size so far. > Memory footprint optimization for INodeFile object. > ---------------------------------------------------- > > 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. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.