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From "Aravindan Vijayan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-19320) Additional query support for HDFS TopN metrics
Date Thu, 29 Dec 2016 19:32:58 GMT
Aravindan Vijayan created AMBARI-19320:
------------------------------------------

             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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