[
https://issues.apache.org/jira/browse/HDDS-5421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17376782#comment-17376782
]
Nanda kumar commented on HDDS-5421:
-----------------------------------
{code:java}
2021-07-07 18:15:37,161 ERROR org.apache.hadoop.jmx.JMXJsonServlet: getting
attribute ScmRatisRoles of
Hadoop:service=StorageContainerManager,name=StorageContainerManagerInfo,component=ServerRuntime
threw an exception2021-07-07 18:15:37,161 ERROR
org.apache.hadoop.jmx.JMXJsonServlet: getting attribute ScmRatisRoles of
Hadoop:service=StorageContainerManager,name=StorageContainerManagerInfo,component=ServerRuntime
threw an exceptionjavax.management.RuntimeMBeanException:
java.lang.NullPointerException at
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.rethrow(DefaultMBeanServerInterceptor.java:839)
at
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.rethrowMaybeMBeanException(DefaultMBeanServerInterceptor.java:852)
at
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:651)
at
com.sun.jmx.mbeanserver.JmxMBeanServer.getAttribute(JmxMBeanServer.java:678) at
org.apache.hadoop.jmx.JMXJsonServlet.writeAttribute(JMXJsonServlet.java:338) at
org.apache.hadoop.jmx.JMXJsonServlet.listBeans(JMXJsonServlet.java:316) at
org.apache.hadoop.jmx.JMXJsonServlet.doGet(JMXJsonServlet.java:210) at
javax.servlet.http.HttpServlet.service(HttpServlet.java:687) at
javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at
org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:791) at
org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1626)
at
org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter.doFilter(StaticUserWebFilter.java:110)
at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193) at
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
at
org.apache.hadoop.hdds.server.http.HttpServer2$QuotingInputFilter.doFilter(HttpServer2.java:1667)
at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193) at
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
at
org.apache.hadoop.hdds.server.http.NoCacheFilter.doFilter(NoCacheFilter.java:48)
at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193) at
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:602)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
at
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235)
at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
at
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1435)
at
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)
at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
at
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1350)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
at org.eclipse.jetty.server.Server.handle(Server.java:516) at
org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:388) at
org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:633) at
org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:380) at
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:279) at
org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105) at
org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104) at
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)
at
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)
at
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)
at
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129)
at
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:383)
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:882)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1036)
at java.lang.Thread.run(Thread.java:748)Caused by:
java.lang.NullPointerException at
org.apache.hadoop.hdds.scm.server.StorageContainerManager.getScmRatisRoles(StorageContainerManager.java:1750)
at sun.reflect.GeneratedMethodAccessor108.invoke(Unknown Source) at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498) at
sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71) at
sun.reflect.GeneratedMethodAccessor12.invoke(Unknown Source) at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498) at
sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275) at
com.sun.jmx.mbeanserver.ConvertingMethod.invokeWithOpenReturn(ConvertingMethod.java:193)
at
com.sun.jmx.mbeanserver.ConvertingMethod.invokeWithOpenReturn(ConvertingMethod.java:175)
at
com.sun.jmx.mbeanserver.MXBeanIntrospector.invokeM2(MXBeanIntrospector.java:117)
at
com.sun.jmx.mbeanserver.MXBeanIntrospector.invokeM2(MXBeanIntrospector.java:54)
at
com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:237)
at com.sun.jmx.mbeanserver.PerInterface.getAttribute(PerInterface.java:83) at
com.sun.jmx.mbeanserver.MBeanSupport.getAttribute(MBeanSupport.java:206) at
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:647)
... 49 more {code}
> SCM throws NPE during JMX call
> ------------------------------
>
> Key: HDDS-5421
> URL: https://issues.apache.org/jira/browse/HDDS-5421
> Project: Apache Ozone
> Issue Type: Bug
> Components: SCM
> Reporter: Nanda kumar
> Assignee: Nanda kumar
> Priority: Major
>
> Whenever there is a JMX call to SCM, there is an NPE in SCM log file.
> JMX call invokes _StorageContainerManager#getScmRatisRoles_
> {code:java}
> @Override
> public String getScmRatisRoles() throws IOException {
> return
> HddsUtils.format(getScmHAManager().getRatisServer().getRatisRoles());
> }
> {code}
> When in NON-HA mode the below call is returning null, causing NPE during JMX
> call.
> {code:java}
> SCMHAManager#getRatisServer(){code}
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