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From Eric Newton <eric.new...@gmail.com>
Subject Re: Accumulo Monitor NullPointerException
Date Fri, 21 Aug 2015 22:33:47 GMT
I don't think this is a dup of 3837.  I've created
https://issues.apache.org/jira/browse/ACCUMULO-3969 .

-Eric


On Fri, Aug 21, 2015 at 6:28 PM, Josh Elser <josh.elser@gmail.com> wrote:

> Hi Scott,
>
> Are you sure you're running Accumulo 1.6.3? That line number seems to
> imply that you're running into
>
> https://issues.apache.org/jira/browse/ACCUMULO-3837
>
> .. but that should be fixed in 1.6.3. Can you double-check please?
>
> - Josh
>
>
> Scott wrote:
>
>> Hello,
>>
>>    We have Accumulo 1.6.3 set up on the HortonWorks install with a basic
>> cluster of one master and one tablet server. Initially everything seemed
>> good but now I'm getting a NullPointerException when I go to the monitor
>> web page. The logs also keep adding a message to that effect as well. I
>> searched and couldn't find any posts with the same problem. I went back
>> through all of the config files and made sure they conform to the
>> configuration instructions. I'm hoping someone can point me to the right
>> place to look for troubleshooting.
>>
>> http://<machine-name>:50095 responds with a page that has the following:
>>
>> <pre>
>> java.lang.NullPointerException
>> at org.apache.accumulo.monitor.Monitor.fetchData(Monitor.java:252)
>> at
>>
>> org.apache.accumulo.monitor.servlets.BasicServlet.doGet(BasicServlet.java:59)
>> at
>>
>> org.apache.accumulo.monitor.servlets.DefaultServlet.doGet(DefaultServlet.java:101)
>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)
>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
>> at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684)
>> at
>> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:503)
>> at
>>
>> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
>> at
>>
>> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
>> at
>>
>> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
>> at
>>
>> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)
>> at
>> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:429)
>> at
>>
>> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
>> at
>>
>> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)
>> at
>>
>> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
>> at
>>
>> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
>> at org.eclipse.jetty.server.Server.handle(Server.java:370)
>> at
>>
>> org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:494)
>> at
>>
>> org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:971)
>> at
>>
>> org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1033)
>> at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644)
>> at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
>> at
>>
>> org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
>> at
>>
>> org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:696)
>> at
>>
>> org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:53)
>> at
>>
>> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
>> at
>>
>> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
>> at java.lang.Thread.run(Thread.java:745)
>> </pre>
>>
>>
>> The logs are recording the following error:
>>
>> 2015-08-21 16:37:21,152 [monitor.Monitor] WARN :
>> java.lang.NullPointerException
>>          at
>> org.apache.accumulo.monitor.Monitor.fetchData(Monitor.java:252)
>>          at org.apache.accumulo.monitor.Monitor$2.run(Monitor.java:508)
>>          at
>> org.apache.accumulo.core.util.LoggingRunnable.run(LoggingRunnable.java:34)
>>          at java.lang.Thread.run(Thread.java:745)
>>
>> Thanks,
>>
>>   Scott
>>
>

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