[HDFS-559] Work out the memory consumption of NN artifacts on a compressed pointer JVM

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: 0.21.0
• Component/s: namenode

Environment

64-bit and 32 bit JVMs, Java6u14 and jdk7 betas, with -XX compressed oops enabled/disabled

• Assignee: Steve Loughran
• Reporter: Steve Loughran
• Created: 21/Aug/09 10:34
• Updated: 23/Jul/14 21:45
• Resolved: 23/Jul/14 21:45

Description

Following up HADOOP-1687, it would be nice to know the size of datatypes in under the java16u14 JVM, which offers compressed pointers.