[AMBARI-24652] Ambari metrics collector failed to show data for custom metrics

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: trunk, 2.6.2
• Component/s: ambari-server
• Labels: pull-request-available
• Assignee: amarnath reddy pappu
• Reporter: amarnath reddy pappu
• Created: 17/Sep/18 21:30
• Updated: 28/Mar/19 19:23
• Resolved: 28/Mar/19 19:06

Description

*Steps to reproduce:
*
1. First generate metrics and post it to AMS.

curl --header "Content-Type: application/json" -X POST http://apappu3.hdp.com:6188/ws/v1/timeline/metrics --data @data1.json

{
  "metrics": [
    {
      "metricname": "AMBARI_METRICS.SmokeTest.FakeMetric",
      "appid": "AMS-TEST-APPID",
      "hostname": "ambari20-5",
      "timestamp": 1537211229000,
      "starttime": 1537211229000,
      "metrics": {
        "1537211229000": 0.963781711428,
        "1537211230000": 1432075898000
      }
    }
  ]
}

2. Now make REST api call to see if the data is present.

http://apappu3.hdp.com:3000/api/datasources/proxy/1/ws/v1/timeline/metrics?metricNames=AMBARI_METRICS.SmokeTest.FakeMetric._avg&hostname=%&appId=AMS-TEST-APPID

This does not return any data - reason for this is , while writing it takes the appid as case sensitive but while reading always looks for lower case appid.

Workaround: change the appid from "AMS-TEST-APPID" to "ams-test-appid" (all lower case)- then GET REST API works fine.

Issue Links

• links to: GitHub Pull Request #19
• links to: GitHub Pull Request #2893