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Posted to dev@tomcat.apache.org by bu...@apache.org on 2012/11/06 08:50:48 UTC
[Bug 54105] New: Thread BLOCKED - Restart tomcat
https://issues.apache.org/bugzilla/show_bug.cgi?id=54105
Priority: P2
Bug ID: 54105
Assignee: dev@tomcat.apache.org
Summary: Thread BLOCKED - Restart tomcat
Severity: critical
Classification: Unclassified
OS: Linux
Reporter: alim.yigiter@obi.de
Hardware: PC
Status: NEW
Version: unspecified
Component: Catalina
Product: Tomcat 6
Created attachment 29559
--> https://issues.apache.org/bugzilla/attachment.cgi?id=29559&action=edit
Full thread dump Java
After Warnings like:
Nov 5, 2012 2:27:21 PM org.apache.jk.common.ChannelSocket processConnection
WARNING: processCallbacks status 2
Thread Blocks at ChannelSocket.java:303 (siehe attachment):
"TP-Processor4" daemon prio=10 tid=0x00002aaacc88f800 nid=0x21ba waiting for
monitor entry [0x0000000044145000]
java.lang.Thread.State: BLOCKED (on object monitor)
at org.apache.jk.common.ChannelSocket.accept(ChannelSocket.java:303)
- waiting to lock <0x00000005bab537d8> (a
org.apache.jk.common.ChannelSocket)
at
org.apache.jk.common.ChannelSocket.acceptConnections(ChannelSocket.java:666)
at
org.apache.jk.common.ChannelSocket$SocketAcceptor.runIt(ChannelSocket.java:877)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
at java.lang.Thread.run(Thread.java:662)
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[Bug 54105] Thread BLOCKED - Restart tomcat
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54105
--- Comment #1 from Alim Yigiter <al...@obi.de> ---
VM and Appserver
Java Runtime: Java(TM) SE Runtime Environment
Version: 1.6.0_22
Java VM Name: Java HotSpot(TM) 64-Bit Server VM
Available Processors/Cores: 8
Server time: Tue Nov 06 09:30:50 CET 2012
Server info: Apache Tomcat/6.0.29
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[Bug 54105] Thread BLOCKED - Restart tomcat
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54105
Konstantin Kolinko <kn...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Konstantin Kolinko <kn...@gmail.com> ---
1. There is nothing wrong with Acceptor thread waiting for incoming
connections.
It is its job to wait for those.
2. "2" is the value of JkHandler.ERROR.
Nothing more can be said from that.
3. The Catalina$CatalinaShutdownHook thread ("Thread-19") is stalled in
unLockSocket(). That is, trying to open a new connection to Tomcat. That is
normal.
If the acceptor thread is in good state (waiting on a socket) and new
connections cannot be made, the cause is somewhere in the network libraries,
out of the control of Tomcat.
If you need further help with it, ask on the users list.
Maybe you could use other tools to diagnose your network, maybe you are hitting
ulimits.
Maybe you have hit OutOfMemory some time earlier (and as a consequence your JVM
is hardly usable any more).
4. A "critical" issue?
Note that 6.0.29 is more than 2 years old. A number of issues has been fixed
since then, including some issues with AJP protocol and some security issues.
Closing as INVALID.
BTW, the org.apache.jk implementation of AJP protocol was removed from later
versions of Apache Tomcat. Whatever this issue is, those classes do not exist
in Tomcat 7 and later.
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[Bug 54105] Thread BLOCKED - Restart tomcat
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54105
Alim Yigiter <al...@obi.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|unspecified |6.0.29
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