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Date: Fri, 10 Jun 2011 05:16:58 +0000 (UTC)
From: "Eric Yang (JIRA)" <jira@apache.org>
To: chukwa-dev@incubator.apache.org
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Subject: [jira] [Commented] (CHUKWA-587) The logic to load the front page of
 hicc appears to be broken
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    [ https://issues.apache.org/jira/browse/CHUKWA-587?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13047000#comment-13047000 ] 

Eric Yang commented on CHUKWA-587:
----------------------------------

The described exception is caused by not having any cluster tag in SystemMetrics hbase table in the past hour.  For making HICC a generic data analytics and reporting system, setting a default cluster in the user session should be optional.

> The logic to load the front page of hicc appears to be broken
> -------------------------------------------------------------
>
>                 Key: CHUKWA-587
>                 URL: https://issues.apache.org/jira/browse/CHUKWA-587
>             Project: Chukwa
>          Issue Type: Bug
>          Components: User Interface
>    Affects Versions: 0.5.0
>         Environment: A stand alone server with all components
>            Reporter: DKN
>             Fix For: 0.5.0
>
>
> I get the following error, in spite of running hicc, collector, agents etc continuously for more than 5 days.
> This appears only when I access : http://localhost:4080/hicc URL. Note that the URL : http://localhost:4080/hicc/jsp/graph_explorer.jsp appears to work okay for me. 
> HTTP ERROR: 500
> INTERNAL_SERVER_ERROR
> RequestURI=/hicc/
> Caused by:
> java.util.NoSuchElementException
> 	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:796)
> 	at java.util.HashMap$KeyIterator.next(HashMap.java:828)
> 	at org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:100)
> 	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:93)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
> 	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373)
> 	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:470)
> 	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:364)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
> 	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
> 	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
> 	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
> 	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
> 	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729)
> 	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
> 	at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:285)
> 	at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:126)
> 	at org.mortbay.jetty.servlet.DefaultServlet.doGet(DefaultServlet.java:463)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
> 	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
> 	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
> 	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
> 	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
> 	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729)
> 	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
> 	at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:206)
> 	at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
> 	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
> 	at org.mortbay.jetty.Server.handle(Server.java:324)
> 	at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
> 	at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:829)
> 	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:513)
> 	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
> 	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
> 	at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
> 	at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)
> We will need to give a consistent behavior for the front page, so that we don't end up giving an opinion that HICC is not working. There may be a change required in the way, chukwa hicc loads the front index.jsp by reading the hbase tables.
> Regards, DKN

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