[HDFS-1117] HDFS portion of HADOOP-6728 (ovehaul metrics framework)

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.20.2
• Fix Version/s: 0.23.0
• Hadoop Flags: Incompatible change, Reviewed

Release Note

Metrics names are standardized to use CapitalizedCamelCase. Some examples:
# Metrics names using "_" is changed to new naming scheme. Eg: bytes_written changes to BytesWritten.
# All metrics names start with capitals. Example: threadsBlocked changes to ThreadsBlocked.

• Assignee: Luke Lu
• Reporter: Luke Lu
• Created: 28/Apr/10 18:00
• Updated: 21/May/11 12:38
• Resolved: 16/May/11 18:49

Issue Links

• blocks: HADOOP-6728 Overhaul metrics framework
• incorporates: HDFS-1922 Recurring failure in TestJMXGet.testNameNode since build 477 on May 11
• incorporates: HDFS-1386 TestJMXGet fails in jdk7
• is required by: HADOOP-6918 Make metrics naming consistent