[AMBARI-21939] Ambari HDFS Heatmaps are not showing data (Not Applicable) for bytes read, bytes written & DataNode Process Network I/O Utilization

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.6.0
• Fix Version/s: 2.6.0
• Component/s: ambari-metrics
• Assignee: Aravindan Vijayan
• Reporter: Aravindan Vijayan
• Created: 12/Sep/17 16:55
• Updated: 13/Sep/17 03:53
• Resolved: 13/Sep/17 02:54

Description

PROBLEM: HDFS Heatmaps are not showing data (Not Applicable) for bytes read, bytes written & DataNode Process Network I/O Utilization
EXPECTED BEHAVIOUR: Heatmaps should show data
ACTUAL BEHAVIOUR: Data is being shown as Not Applicable (Grey Box)
ANALYSIS
This is reproducible in Ambari 2.2.2 and Ambari 2.5.1.0. If you go to HDFS, then click on Heatmaps, you can see the API call go to

fields=host_components/metrics/dfs/datanode/bytes_written._rate 

however this returns no values. If you remove ._rate then you can see the values which you would expect.

Issue Links

• links to: Review Board