[jira] [Created] (HBASE-12942) After disabling the hfile block cache, Regionserver UI is throwing java.lang.NullPointerException

[Y. SREENIVASULU REDDY (JIRA)]

Y. SREENIVASULU REDDY created HBASE-12942:
---------------------------------------------

             Summary: After disabling the hfile block cache, Regionserver UI is 
throwing java.lang.NullPointerException
                 Key: HBASE-12942
                 URL: https://issues.apache.org/jira/browse/HBASE-12942
             Project: HBase
          Issue Type: Bug
          Components: regionserver, UI
    Affects Versions: 1.0.0
            Reporter: Y. SREENIVASULU REDDY
             Fix For: 1.0.0, 2.0.0


Regionserver UI throws java.lang.NullPointerException
if hfile.block.cache.size is disabled


{code}
java.lang.NullPointerException
        at 
org.apache.hadoop.hbase.tmpl.regionserver.BlockCacheTmplImpl.__jamon_innerUnit__bc_stats(BlockCacheTmplImpl.java:121)
        at 
org.apache.hadoop.hbase.tmpl.regionserver.BlockCacheTmplImpl.renderNoFlush(BlockCacheTmplImpl.java:84)
        at 
org.apache.hadoop.hbase.tmpl.regionserver.BlockCacheTmpl.renderNoFlush(BlockCacheTmpl.java:140)
        at 
org.apache.hadoop.hbase.tmpl.regionserver.RSStatusTmplImpl.renderNoFlush(RSStatusTmplImpl.java:146)
        at 
org.apache.hadoop.hbase.tmpl.regionserver.RSStatusTmpl.renderNoFlush(RSStatusTmpl.java:220)
        at 
org.apache.hadoop.hbase.tmpl.regionserver.RSStatusTmpl.render(RSStatusTmpl.java:211)
        at 
org.apache.hadoop.hbase.regionserver.RSStatusServlet.doGet(RSStatusServlet.java:58)
        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:511)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221)
        at 
org.apache.hadoop.hbase.http.lib.StaticUserWebFilter$StaticUserFilter.doFilter(StaticUserWebFilter.java:113)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
        at 
org.apache.hadoop.hbase.http.HttpServer$QuotingInputFilter.doFilter(HttpServer.java:1351)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
        at 
org.apache.hadoop.hbase.http.NoCacheFilter.doFilter(NoCacheFilter.java:49)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
        at 
org.apache.hadoop.hbase.http.NoCacheFilter.doFilter(NoCacheFilter.java:49)
        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}



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