[jboss-jira] [JBoss JIRA] (WFLY-3834) Memory leak in org.xnio.ByteBufferSlicePool
David Lloyd (JIRA)
issues at jboss.org
Wed Sep 10 08:38:20 EDT 2014
[ https://issues.jboss.org/browse/WFLY-3834?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13000810#comment-13000810 ]
David Lloyd edited comment on WFLY-3834 at 9/10/14 8:37 AM:
------------------------------------------------------------
Since this problem only seems to occur with the remoting management client, my hypothesis is that a message stream is never being closed, thus its backing buffer is never being freed. Or maybe management client is doing something else no other protocol does, like closing the message before it is fully read or something like that. Still investigating.
was (Author: dmlloyd):
Since this problem only seems to occur with the remoting management client, my hypothesis is that a message stream is never being closed, thus its backing buffer is never being freed. Or maybe management client is doing something that no other protocol is doing something else no other protocol does, like closing the message before it is fully read or something like that. Still investigating.
> Memory leak in org.xnio.ByteBufferSlicePool
> -------------------------------------------
>
> Key: WFLY-3834
> URL: https://issues.jboss.org/browse/WFLY-3834
> Project: WildFly
> Issue Type: Bug
> Components: Domain Management
> Affects Versions: 8.1.0.Final
> Reporter: Sergey Lisovoy
> Assignee: David Lloyd
> Labels: memory_leak, memoryleak
>
> I have a simple thread that monitor remote wildfly process status. After some time it fail with OutOfMemory exception.
> I wrote simple exsample how to reproduce its error:
> {code:java}
> package ru.kamis.tests.xniomemoryleaks;
> import org.jboss.as.controller.client.ModelControllerClient;
> import org.jboss.as.controller.client.helpers.Operations;
> import org.jboss.dmr.ModelNode;
> public class OutOfMemoryDemo {
> public static void main(String[] args) throws Exception {
>
> for(int i=0; i<1000000; i++) {
> ModelControllerClient client = null;
> client = ModelControllerClient.Factory.create("localhost", 9990);
>
> ModelNode operation = Operations.createReadAttributeOperation(new ModelNode().setEmptyList(), "server-state");
> client.execute(operation);
>
> client.close();
>
> if(i % 1000 == 0) {
> System.out.println("Processed: " + i);
> }
> }
> }
> }
> {code}
> Program produces folowing output:
> {noformat}
> сен 09, 2014 2:33:20 PM org.xnio.Xnio <clinit>
> INFO: XNIO version 3.2.2.Final
> сен 09, 2014 2:33:20 PM org.xnio.nio.NioXnio <clinit>
> INFO: XNIO NIO Implementation Version 3.2.2.Final
> сен 09, 2014 2:33:20 PM org.jboss.remoting3.EndpointImpl <clinit>
> INFO: JBoss Remoting version 4.0.3.Final
> Processed: 0
> Processed: 1000
> Processed: 2000
> Processed: 3000
> Processed: 4000
> Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
> at java.lang.String.toCharArray(String.java:2746)
> at sun.net.www.ParseUtil.encodePath(ParseUtil.java:107)
> at sun.misc.URLClassPath$JarLoader.checkResource(URLClassPath.java:757)
> at sun.misc.URLClassPath$JarLoader.getResource(URLClassPath.java:842)
> at sun.misc.URLClassPath.getResource(URLClassPath.java:199)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:358)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
> at org.jboss.as.protocol.ProtocolConnectionUtils.connectSync(ProtocolConnectionUtils.java:119)
> at org.jboss.as.protocol.ProtocolConnectionManager$EstablishingConnection.connect(ProtocolConnectionManager.java:256)
> at org.jboss.as.protocol.ProtocolConnectionManager.connect(ProtocolConnectionManager.java:70)
> at org.jboss.as.protocol.mgmt.FutureManagementChannel$Establishing.getChannel(FutureManagementChannel.java:204)
> at org.jboss.as.controller.client.impl.RemotingModelControllerClient.getOrCreateChannel(RemotingModelControllerClient.java:148)
> at org.jboss.as.controller.client.impl.RemotingModelControllerClient$1.getChannel(RemotingModelControllerClient.java:67)
> at org.jboss.as.protocol.mgmt.ManagementChannelHandler.executeRequest(ManagementChannelHandler.java:117)
> at org.jboss.as.protocol.mgmt.ManagementChannelHandler.executeRequest(ManagementChannelHandler.java:92)
> at org.jboss.as.controller.client.impl.AbstractModelControllerClient.executeRequest(AbstractModelControllerClient.java:236)
> at org.jboss.as.controller.client.impl.AbstractModelControllerClient.execute(AbstractModelControllerClient.java:141)
> at org.jboss.as.controller.client.impl.AbstractModelControllerClient.executeForResult(AbstractModelControllerClient.java:127)
> at org.jboss.as.controller.client.impl.AbstractModelControllerClient.execute(AbstractModelControllerClient.java:71)
> at ru.kamis.tests.xniomemoryleaks.OutOfMemoryDemo.main(OutOfMemoryDemo.java:15)
> Exception in thread "RMI TCP Connection(idle)" java.lang.OutOfMemoryError: Java heap space
> Exception in thread "RMI TCP Connection(idle)" java.lang.OutOfMemoryError: Java heap space
> Exception in thread "RMI TCP Connection(idle)" java.lang.OutOfMemoryError: Java heap space
> Exception in thread "RMI TCP Connection(idle)" java.lang.OutOfMemoryError: Java heap space
> Exception in thread "RMI TCP Connection(idle)" java.lang.OutOfMemoryError: Java heap space
> Exception in thread "RMI TCP Connection(idle)" Exception in thread "RMI TCP Connection(idle)" java.lang.OutOfMemoryError: Java heap space
> java.lang.OutOfMemoryError: Java heap space
> Exception in thread "RMI TCP Connection(idle)" java.lang.OutOfMemoryError: Java heap space
> Exception in thread "RMI TCP Connection(idle)" java.lang.OutOfMemoryError: Java heap space
> Exception in thread "RMI TCP Connection(idle)" java.lang.OutOfMemoryError: Java heap space
> Exception in thread "RMI TCP Connection(idle)" java.lang.OutOfMemoryError: Java heap space
> сен 09, 2014 2:35:20 PM org.jboss.as.controller.client.impl.RemotingModelControllerClient finalize
> WARN: JBAS010600: Closing leaked controller client
> JBAS010649: Allocation stack trace:
> at java.lang.Thread.getStackTrace(Thread.java:1589)
> at org.jboss.as.controller.client.impl.RemotingModelControllerClient.<init>(RemotingModelControllerClient.java:76)
> at org.jboss.as.controller.client.ModelControllerClient$Factory.create(ModelControllerClient.java:353)
> at org.jboss.as.controller.client.ModelControllerClient$Factory.create(ModelControllerClient.java:200)
> at ru.kamis.tests.xniomemoryleaks.OutOfMemoryDemo.main(OutOfMemoryDemo.java:12)
> Exception in thread "RMI TCP Connection(idle)" java.lang.OutOfMemoryError: Java heap space
> Exception in thread "RMI TCP Connection(idle)" java.lang.OutOfMemoryError: Java heap space
> Exception in thread "RMI TCP Connection(idle)" java.lang.OutOfMemoryError: Java heap space
> {noformat}
> Used libraries:
> {code:xml}
> <dependency>
> <groupId>org.wildfly</groupId>
> <artifactId>wildfly-controller-client</artifactId>
> <version>8.1.0.Final</version>
> </dependency>
> {code}
> The same bug is reproduced on other xnio versions: 3.2.3.Final, 3.3.0.Beta2
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