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Posted to hdfs-dev@hadoop.apache.org by "Tsz Wo Nicholas Sze (JIRA)" <ji...@apache.org> on 2014/04/29 03:55:16 UTC
[jira] [Resolved] (HDFS-4211) failed volume causes
DataNode#getVolumeInfo NPEs on multi-BP DN
[ https://issues.apache.org/jira/browse/HDFS-4211?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tsz Wo Nicholas Sze resolved HDFS-4211.
---------------------------------------
Resolution: Duplicate
Resolving this as a duplicate of HDFS-2882.
> failed volume causes DataNode#getVolumeInfo NPEs on multi-BP DN
> ---------------------------------------------------------------
>
> Key: HDFS-4211
> URL: https://issues.apache.org/jira/browse/HDFS-4211
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Affects Versions: 2.0.2-alpha
> Reporter: Andy Isaacson
> Assignee: Andy Isaacson
>
> On a DN with {{failed.volumes.tolerated=0}} a disk went bad. After restarting the DN, the following backtrace was observed when accessing {{/jmx}}:
> {code}
> 2012-06-12 16:21:43,248 ERROR org.apache.hadoop.jmx.JMXJsonServlet:
> getting attribute VolumeInfo of
> Hadoop:service=DataNode,name=DataNodeInfo threw an exception
> javax.management.RuntimeMBeanException: java.lang.NullPointerException
> at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.rethrow(DefaultMBeanServerInterceptor.java:856)
> at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.rethrowMaybeMBeanException(DefaultMBeanServerInterceptor.java:869)
> at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:670)
> at com.sun.jmx.mbeanserver.JmxMBeanServer.getAttribute(JmxMBeanServer.java:638)
> at org.apache.hadoop.jmx.JMXJsonServlet.writeAttribute(JMXJsonServlet.java:315)
> at org.apache.hadoop.jmx.JMXJsonServlet.listBeans(JMXJsonServlet.java:293)
> at org.apache.hadoop.jmx.JMXJsonServlet.doGet(JMXJsonServlet.java:193)
> 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$CachedChain.doFilter(ServletHandler.java:1221)
> at org.apache.hadoop.http.lib.StaticUserWebFilter$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:947)
> 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)
> Caused by: java.lang.NullPointerException
> at org.apache.hadoop.hdfs.server.datanode.DataNode.getVolumeInfo(DataNode.java:2130)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at com.sun.jmx.mbeanserver.ConvertingMethod.invokeWithOpenReturn(ConvertingMethod.java:167)
> at com.sun.jmx.mbeanserver.MXBeanIntrospector.invokeM2(MXBeanIntrospector.java:96)
> at com.sun.jmx.mbeanserver.MXBeanIntrospector.invokeM2(MXBeanIntrospector.java:33)
> at com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:208)
> at com.sun.jmx.mbeanserver.PerInterface.getAttribute(PerInterface.java:65)
> {code}
> Since tolerated=0 the DN should have errored out rather than starting up, but due to having multiple BPs configured the DN does not exit correctly in this situation.
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