[HDFS-12371] "BlockVerificationFailures" and "BlocksVerified" show up as 0 in Datanode JMX

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.7.1
• Fix Version/s: 2.9.0, 3.0.0-beta1, 2.8.3, 3.1.0, 2.7.6
• Component/s: metrics
• Hadoop Flags: Reviewed
• Assignee: Hanisha Koneru
• Reporter: Sai Nukavarapu
• Created: 24/Aug/17 18:40
• Updated: 19/Jan/18 01:30
• Resolved: 21/Sep/17 14:02

Description

"BlockVerificationFailures" and "BlocksVerified" show up as 0 in Datanode JMX
Looking at the code, i see below description.

`BlockVerificationFailures` | Total number of verifications failures | 
`BlocksVerified` | Total number of blocks verified |