https://issues.apache.org/bugzilla/show_bug.cgi?id=52615
Bug #: 52615
Summary: Daemon thread is terminated unexpectedly when uncaught
exceptions is thrown from the other thread
Product: Tomcat 7
Version: 7.0.14
Platform: PC
Status: NEW
Severity: regression
Priority: P2
Component: Catalina
AssignedTo: dev@tomcat.apache.org
ReportedBy: wan...@cn.ibm.com
Classification: Unclassified
We use tomcat as the web app server. After we upgraded it from 5.5.x to 7.0.14,
a critical issue happens.
When the uncaught exception stack contains
"com.xxx.services.server.dispatch.callback.UTF8SocketChannel" and
"com.xxx.services.server.dispatch.callback.LineBufferedSocketChannel", which
both have a DispatcherSession member which is registered on a daemon thread
Dispatcher, Dispatcher thread is also terminated unexpectedly. And I am sure
NOT all the non-daemon threads are terminated.
The uncaught exception stake looks like:
Throwable occurred:java.nio.channels.UnresolvedAddressException
at sun.nio.ch.Net.checkAddress(Net.java:41)
at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:499)
at
com.xxx.services.server.dispatch.callback.UTF8SocketChannel.connect(UTF8SocketChannel.java:90)
at
com.xxx.services.server.dispatch.callback.LineBufferedSocketChannel.connect(LineBufferedSocketChannel.java:95)
at com.xxx.jas.agent.AgentConnection.connect(AgentConnection.java:85)
at
com.xxx.jas.agent.action.OpenAgentConnection.action(OpenAgentConnection.java:26)
at com.xxx.jas.fiber.FiberAction.call(FiberAction.java:197)
at com.xxx.jas.fiber.action.flow.Block.action(Block.java:63)
at com.xxx.jas.fiber.FiberAction.call(FiberAction.java:197)
at com.xxx.jas.agent.AgentFiber.action(AgentFiber.java:233)
at
com.xxx.jas.agent.AgentFiber$AgentFiberAction.action(AgentFiber.java:336)
at com.xxx.jas.fiber.FiberAction.call(FiberAction.java:197)
at com.xxx.jas.fiber.Fiber.runFiber(Fiber.java:670)
at com.xxx.jas.fiber.FiberThread.runFibers(FiberThread.java:258)
at com.xxx.jas.fiber.FiberThread.run(FiberThread.java:246)
It seems tomcat 7.0.14 do some 'additional' cleanups for uncaught exceptions.
Note: It occurs when numbers of concurrent uncaught exceptions happened in a
short time. And it hard to be reproduced on linux platform.
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