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.

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