There is already a JIRA for this NPE:
https://issues.apache.org/jira/browse/KYLIN-3609


ShaoFeng Shi <shaofeng...@apache.org> 于2018年10月22日周一 上午9:08写道:

> It seems the result set is null, and there is a bug which didn't handle
> this situation. Would you like to report a JIRA to Kylin?
>
> Regarding the dashboard, have you created and build the system cube?
>
> Shrikant Bang <b.shrikan...@gmail.com> 于2018年10月22日周一 上午3:19写道:
>
>> Hi Team,
>>
>>      Query metrics are not getting updated on
>> "host:7070/kylin/dashboard". I found below stack trace regarding query
>> metrics facade in Kylin logs.
>>
>>       My Kylin version v2.5 with Hbase v1.x. Am I missing something in
>> configuration which is causing below error?
>>
>> 2018-10-21 18:34:41,625 WARN  [Query
>> 7b16f84c-3053-f64c-2cd2-4ae5348c295c-121] service.QueryService:421 : Write
>> metric error.
>> java.lang.NullPointerException
>> at
>> org.apache.kylin.rest.metrics.QueryMetricsFacade.updateMetricsToReservoir(QueryMetricsFacade.java:148)
>> at
>> org.apache.kylin.rest.metrics.QueryMetricsFacade.updateMetrics(QueryMetricsFacade.java:73)
>> at
>> org.apache.kylin.rest.service.QueryService.recordMetric(QueryService.java:503)
>> at
>> org.apache.kylin.rest.service.QueryService.doQueryWithCache(QueryService.java:419)
>> at
>> org.apache.kylin.rest.service.QueryService.doQueryWithCache(QueryService.java:351)
>> at
>> org.apache.kylin.rest.controller.QueryController.query(QueryController.java:86)
>> at sun.reflect.GeneratedMethodAccessor253.invoke(Unknown Source)
>> at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>> at java.lang.reflect.Method.invoke(Method.java:498)
>> at
>> org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)
>> at
>> org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133)
>> at
>> org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97)
>> at
>> org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
>> at
>> org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
>> at
>> org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
>> at
>> org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967)
>> at
>> org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901)
>> at
>> org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
>> at
>> org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
>> at
>> org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
>>
>>
>> Thank You,
>> Shrikant Bang.
>>
>
>
> --
> Best regards,
>
> Shaofeng Shi 史少锋
>
>

-- 
Best regards,

Shaofeng Shi 史少锋

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