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https://issues.apache.org/jira/browse/FTPSERVER-403?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
ArtemGr updated FTPSERVER-403:
------------------------------
Description:
FTP works fine for the most time but once in a while (depended on how often the
FTP is used) it would hang, consuming 100% CPU, in
java.util.HashMap.removeEntryForKey (HashMap.java:586)
java.util.HashMap.remove (HashMap.java:555)
org.slf4j.helpers.BasicMDCAdapter.remove (BasicMDCAdapter.java:91)
org.slf4j.MDC.remove (MDC.java:156)
org.apache.mina.filter.logging.MdcInjectionFilter.filter
(MdcInjectionFilter.java:141)
org.apache.mina.filter.util.CommonEventFilter.messageSent
(CommonEventFilter.java:75)
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageSent
(DefaultIoFilterChain.java:462)
org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1300
(DefaultIoFilterChain.java:46)
org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageSent
(DefaultIoFilterChain.java:802)
org.apache.mina.filter.codec.ProtocolCodecFilter.messageSent
(ProtocolCodecFilter.java:287)
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageSent
(DefaultIoFilterChain.java:462)
org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1300
(DefaultIoFilterChain.java:46)
org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageSent
(DefaultIoFilterChain.java:802)
org.apache.mina.core.filterchain.IoFilterEvent.fire
(IoFilterEvent.java:80)
org.apache.mina.core.session.IoEvent.run (IoEvent.java:63)
org.apache.mina.filter.executor.OrderedThreadPoolExecutor$Worker.runTask
(OrderedThreadPoolExecutor.java:780)
org.apache.mina.filter.executor.OrderedThreadPoolExecutor$Worker.runTasks
(OrderedThreadPoolExecutor.java:772)
org.apache.mina.filter.executor.OrderedThreadPoolExecutor$Worker.run
(OrderedThreadPoolExecutor.java:714)
java.lang.Thread.run (Thread.java:636)
Seems like a synchronization issue to me.
was:
FTP works fine for the most time but once in a while (depended on how often the
FTP is used) it would hang, consuming 100% CPU, in
java.util.HashMap.removeEntryForKey (HashMap.java:586)
java.util.HashMap.remove (HashMap.java:555)
org.slf4j.helpers.BasicMDCAdapter.remove (BasicMDCAdapter.java:91)
org.slf4j.MDC.remove (MDC.java:156)
org.apache.mina.filter.logging.MdcInjectionFilter.filter
(MdcInjectionFilter.java:141)
org.apache.mina.filter.util.CommonEventFilter.messageSent
(CommonEventFilter.java:75)
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageSent
(DefaultIoFilterChain.java:462)
org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1300
(DefaultIoFilterChain.java:46)
org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageSent
(DefaultIoFilterChain.java:802)
org.apache.mina.filter.codec.ProtocolCodecFilter.messageSent
(ProtocolCodecFilter.java:287)
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageSent
(DefaultIoFilterChain.java:462)
org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1300
(DefaultIoFilterChain.java:46)
org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageSent
(DefaultIoFilterChain.java:802)
org.apache.mina.core.filterchain.IoFilterEvent.fire
(IoFilterEvent.java:80)
org.apache.mina.core.session.IoEvent.run (IoEvent.java:63)
org.apache.mina.filter.executor.OrderedThreadPoolExecutor$Worker.runTask
(OrderedThreadPoolExecutor.java:780)
org.apache.mina.filter.executor.OrderedThreadPoolExecutor$Worker.runTasks
(OrderedThreadPoolExecutor.java:772)
org.apache.mina.filter.executor.OrderedThreadPoolExecutor$Worker.run
(OrderedThreadPoolExecutor.java:714)
The only MDC-related code that our application adds is the following in the
UserManager.authenticate implementation:
Map context = MDC.getCopyOfContextMap();
if (context != null) System.out.println ("FTP user logged in: " +
context);
return user;
Seems like a synchronization issue to me.
Affects Version/s: 1.0.6
Still seeing it in 1.0.6, Mina 2.0.4.
> FTP would periodically hang in MDC
> ----------------------------------
>
> Key: FTPSERVER-403
> URL: https://issues.apache.org/jira/browse/FTPSERVER-403
> Project: FtpServer
> Issue Type: Bug
> Components: Core, Server
> Affects Versions: 1.0.3, 1.0.4, 1.0.5, 1.0.6
> Environment: Encountered it both on Linux and FreeBSD, both on Sun
> JVM 1.6 and OpenJDK 6.
> Reporter: ArtemGr
>
> FTP works fine for the most time but once in a while (depended on how often
> the FTP is used) it would hang, consuming 100% CPU, in
> java.util.HashMap.removeEntryForKey (HashMap.java:586)
> java.util.HashMap.remove (HashMap.java:555)
> org.slf4j.helpers.BasicMDCAdapter.remove (BasicMDCAdapter.java:91)
> org.slf4j.MDC.remove (MDC.java:156)
> org.apache.mina.filter.logging.MdcInjectionFilter.filter
> (MdcInjectionFilter.java:141)
> org.apache.mina.filter.util.CommonEventFilter.messageSent
> (CommonEventFilter.java:75)
>
> org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageSent
> (DefaultIoFilterChain.java:462)
> org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1300
> (DefaultIoFilterChain.java:46)
>
> org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageSent
> (DefaultIoFilterChain.java:802)
> org.apache.mina.filter.codec.ProtocolCodecFilter.messageSent
> (ProtocolCodecFilter.java:287)
>
> org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageSent
> (DefaultIoFilterChain.java:462)
> org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1300
> (DefaultIoFilterChain.java:46)
>
> org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageSent
> (DefaultIoFilterChain.java:802)
> org.apache.mina.core.filterchain.IoFilterEvent.fire
> (IoFilterEvent.java:80)
> org.apache.mina.core.session.IoEvent.run (IoEvent.java:63)
>
> org.apache.mina.filter.executor.OrderedThreadPoolExecutor$Worker.runTask
> (OrderedThreadPoolExecutor.java:780)
>
> org.apache.mina.filter.executor.OrderedThreadPoolExecutor$Worker.runTasks
> (OrderedThreadPoolExecutor.java:772)
> org.apache.mina.filter.executor.OrderedThreadPoolExecutor$Worker.run
> (OrderedThreadPoolExecutor.java:714)
> java.lang.Thread.run (Thread.java:636)
> Seems like a synchronization issue to me.
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