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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9294) NPE in /rs-status during RS shutdown
Date Wed, 21 Aug 2013 23:58:52 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13747055#comment-13747055
] 

Steve Loughran commented on HBASE-9294:
---------------------------------------

{code}
java.lang.NullPointerException
	at org.apache.hadoop.hbase.tmpl.regionserver.RSStatusTmplImpl.renderNoFlush(RSStatusTmplImpl.java:163)
	at org.apache.hadoop.hbase.tmpl.regionserver.RSStatusTmpl.renderNoFlush(RSStatusTmpl.java:172)
	at org.apache.hadoop.hbase.tmpl.regionserver.RSStatusTmpl.render(RSStatusTmpl.java:163)
	at org.apache.hadoop.hbase.regionserver.RSStatusServlet.doGet(RSStatusServlet.java:49)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221)
	at org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter.doFilter(StaticUserWebFilter.java:109)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
	at org.apache.hadoop.http.HttpServer$QuotingInputFilter.doFilter(HttpServer.java:1077)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
	at org.apache.hadoop.http.NoCacheFilter.doFilter(NoCacheFilter.java:45)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)
	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
	at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
	at org.mortbay.jetty.Server.handle(Server.java:326)
	at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
	at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928)
	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
	at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
	at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
{code}
                
> NPE in /rs-status during RS shutdown
> ------------------------------------
>
>                 Key: HBASE-9294
>                 URL: https://issues.apache.org/jira/browse/HBASE-9294
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 0.95.2
>            Reporter: Steve Loughran
>            Priority: Minor
>
> While hitting reload to see when a kill-initiated RS shutdown would make the Web UI go
away, I got a stack trace from an NPE

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