Aravindan Vijayan created AMBARI-19320:
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Summary: Additional query support for HDFS TopN metrics
Key: AMBARI-19320
URL: https://issues.apache.org/jira/browse/AMBARI-19320
Project: Ambari
Issue Type: Bug
Components: ambari-metrics
Affects Versions: 2.5.0
Reporter: Aravindan Vijayan
Assignee: Aravindan Vijayan
Fix For: 2.5.0
We need to support the following 2 queries to render required graphs in Grafana
for HDFS- TopN dashboard.
* dfs.NNTopUserOpCounts.windowMs=150000.op=%.user=*
* dfs.NNTopUserOpCounts.windowMs=150000.op=*.user=%
Currently, a Null Pointer Exception is thrown for the above queries.
{code}
2016-12-28 22:30:24,614 WARN
org.apache.hadoop.yarn.webapp.GenericExceptionHandler: INTERNAL_SERVER_ERROR
java.lang.NullPointerException
at
org.apache.hadoop.yarn.server.applicationhistoryservice.metrics.timeline.PhoenixHBaseAccessor.appendMetricFromResultSet(PhoenixHBaseAccessor.java:867)
at
org.apache.hadoop.yarn.server.applicationhistoryservice.metrics.timeline.PhoenixHBaseAccessor.getMetricRecords(PhoenixHBaseAccessor.java:782)
at
org.apache.hadoop.yarn.server.applicationhistoryservice.metrics.timeline.HBaseTimelineMetricStore.getTimelineMetrics(HBaseTimelineMetricStore.java:255)
at
org.apache.hadoop.yarn.server.applicationhistoryservice.webapp.TimelineWebServices.getTimelineMetrics(TimelineWebServices.java:359)
at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
{code}
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