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https://issues.apache.org/jira/browse/AMBARI-25998?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brahma Reddy Battula updated AMBARI-25998:
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Fix Version/s: 2.8.0
2.7.8
Resolution: Fixed
Status: Resolved (was: Patch Available)
[~arshad.mohammad] thanks for reporting this and working on this. It's
committed to trunk and branch-2.7
> Host uuid is not getting synced to other collectors, causing NPE while
> accessing metric
> ---------------------------------------------------------------------------------------
>
> Key: AMBARI-25998
> URL: https://issues.apache.org/jira/browse/AMBARI-25998
> Project: Ambari
> Issue Type: Bug
> Components: ambari-metrics
> Affects Versions: metrics-3.0.0
> Reporter: Mohammad Arshad
> Assignee: Mohammad Arshad
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.8.0, 2.7.8
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> Host uuid is not getting synced with other collectors, causing NPE while
> accessing metric
> {code:java}
> java.lang.NullPointerException
> at
> org.apache.ambari.metrics.core.timeline.PhoenixHBaseAccessor.getLastTimelineMetricFromResultSet(PhoenixHBaseAccessor.java:457)
> at
> org.apache.ambari.metrics.core.timeline.PhoenixHBaseAccessor.getLatestMetricRecords(PhoenixHBaseAccessor.java:1150)
> at
> org.apache.ambari.metrics.core.timeline.PhoenixHBaseAccessor.getMetricRecords(PhoenixHBaseAccessor.java:966)
> at
> org.apache.ambari.metrics.core.timeline.HBaseTimelineMetricsService.getTimelineMetrics(HBaseTimelineMetricsService.java:294)
> at
> org.apache.ambari.metrics.webapp.TimelineWebServices.getTimelineMetrics(TimelineWebServices.java:267)
> {code}
> *Steps to reproduce the issue*
> 1. Push below metrics through collector-1
> {noformat}
> {
> "metrics": [
> {
> "metricname": "cpu1",
> "appid": "app1",
> "hostname": "host1",
> "starttime": 1693294119309,
> "metrics": {
> "1693294119309": 100,
> "1693294129309": 200
> }
> }
> ]
> }
> {noformat}
> After metadata sync interval elapsed, performed following operations
> 2. GET http://COLLECTOR-1-HOST:6188/ws/v1/timeline/metrics/hosts returned
> {noformat}
> {
> "host1": [
> "app1"
> ],
> ...
> }
> {noformat}
> 3. GET http://COLLECTOR-2-HOST:6188/ws/v1/timeline/metrics/hosts returned
> {
> "host1": [
> "app1"
> ],
> ...
> }
> 4. GET
> http://COLLECTOR-1-HOST:6188/ws/v1/timeline/metrics?metricNames=cpu1&appId=app1&hostname=host1
> returned
> {
> "metrics": [
> {
> "metricname": "cpu1",
> "appid": "app1",
> "hostname": "host1",
> "timestamp": 0,
> "starttime": 1693294119309,
> "metrics": {
> "1693294129309": 200.0
> },
> "metadata": {}
> }
> ]
> }
> 5. GET
> http://COLLECTOR-2-HOST:6188/ws/v1/timeline/metrics?metricNames=cpu1&appId=app1&hostname=host1
> returned
> {noformat}
> {
> "exception": "NullPointerException",
> "javaClassName": "java.lang.NullPointerException"
> }
> {noformat}
> When host name is being synced, host id also should be synced to fix this
> issue.
> Similar to this issue another issue
> https://issues.apache.org/jira/browse/AMBARI-25963 was raised, but that NPE
> was because metrics uuid was not synced, this issue is because of host uuid
> is not synced.
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