facebook/tsdash — Issue #11: NullPointerException when querying metrics.
Author: phobos182
Created: 2012-03-06 21:57:42+00:00
State: open

Getting this error message when querying OpenTSDB for some metrics. Any where to start debugging? Does not happen when I filter some of the hosts. So I think it's an aggregate issue?

com.facebook.tsdb.tsdash.client.service.ServiceException: details
----

java.lang.NullPointerException
at com.facebook.tsdb.tsdash.server.gnuplot.Gnuplot2D.plot(Unknown Source)
at com.facebook.tsdb.tsdash.server.PlotEndpoint.doGet(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)