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https://issues.apache.org/jira/browse/JAMES-3311?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Benoit Tellier closed JAMES-3311.
---------------------------------
Resolution: Fixed
These exceptions are now gracefully handled.
> ImapChannelUpstreamHandler does not supports concurrent accesses
> ----------------------------------------------------------------
>
> Key: JAMES-3311
> URL: https://issues.apache.org/jira/browse/JAMES-3311
> Project: James Server
> Issue Type: Bug
> Components: IMAPServer
> Reporter: Gautier DI FOLCO
> Priority: Minor
>
> *ImapChannelUpstreamHandler* can be called concurrently and several IMAP
> messages being processed parrallely on the same connection.
> There is a data race: one command cannot add the heartbeat handler, the other
> one removes it.
> *org.jboss.netty.channel.ChannelPipeline* is not concurrent friendly.
>
> {code:java}
> java.util.NoSuchElementException: heartbeatHandler
> at
> org.jboss.netty.channel.DefaultChannelPipeline.getContextOrDie(DefaultChannelPipeline.java:684)
> at
> org.jboss.netty.channel.DefaultChannelPipeline.remove(DefaultChannelPipeline.java:153)
> at
> org.apache.james.imapserver.netty.ImapChannelUpstreamHandler.messageReceived(ImapChannelUpstreamHandler.java:215)
> at
> org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
> at
> org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
> at
> org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)
> at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:296)
> at
> org.jboss.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:462)
> at
> org.jboss.netty.handler.codec.frame.FrameDecoder.callDecode(FrameDecoder.java:443)
> at
> org.jboss.netty.handler.codec.frame.FrameDecoder.messageReceived(FrameDecoder.java:303)
> at
> org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
> at
> org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
> at
> org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)
> at
> org.jboss.netty.handler.execution.ChannelUpstreamEventRunnable.doRun(ChannelUpstreamEventRunnable.java:43)
> at
> org.jboss.netty.handler.execution.ChannelEventRunnable.run(ChannelEventRunnable.java:67)
> at
> org.jboss.netty.handler.execution.OrderedMemoryAwareThreadPoolExecutor$ChildExecutor.run(OrderedMemoryAwareThreadPoolExecutor.java:314)
> at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown
> Source)
> at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown
> Source)
> at java.base/java.lang.Thread.run(Unknown Source){code}
>
> {code:java}
> java.lang.IllegalArgumentException: Duplicate handler name: heartbeatHandler
> at
> org.jboss.netty.channel.DefaultChannelPipeline.checkDuplicateName(DefaultChannelPipeline.java:677)
> at
> org.jboss.netty.channel.DefaultChannelPipeline.addBefore(DefaultChannelPipeline.java:117)
> at
> org.apache.james.imapserver.netty.ImapChannelUpstreamHandler.messageReceived(ImapChannelUpstreamHandler.java:192)
> at
> org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
> at
> org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
> at
> org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)
> at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:296)
> at
> org.jboss.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:462)
> at
> org.jboss.netty.handler.codec.frame.FrameDecoder.callDecode(FrameDecoder.java:443)
> at
> org.jboss.netty.handler.codec.frame.FrameDecoder.messageReceived(FrameDecoder.java:303)
> at
> org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
> at
> org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
> at
> org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)
> at
> org.jboss.netty.handler.execution.ChannelUpstreamEventRunnable.doRun(ChannelUpstreamEventRunnable.java:43)
> at
> org.jboss.netty.handler.execution.ChannelEventRunnable.run(ChannelEventRunnable.java:67)
> at
> org.jboss.netty.handler.execution.OrderedMemoryAwareThreadPoolExecutor$ChildExecutor.run(OrderedMemoryAwareThreadPoolExecutor.java:314)
> at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown
> Source)
> at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown
> Source)
> at java.base/java.lang.Thread.run(Unknown Source){code}
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