On Mon, Mar 12, 2012 at 2:34 PM, Caldarale, Charles R
<chuck.caldar...@unisys.com> wrote:
>> From: Dan Armbrust [mailto:daniel.armbrust.l...@gmail.com]
>> Subject: Hanging on startup?
>
>> Startup, and it hangs on app deploy:
>
> Waiting for entropy to build up? Take a few thread dumps with jstack to see
> who's waiting on what. If it is entropy, see this discussion:
>
> http://marc.info/?l=tomcat-user&m=132769606728228&w=2
>
>
> - Chuck
>
>
I think your right.
Here is the stack I just dug out:
"pool-2-thread-1" prio=10 tid=0x0000000040c4a800 nid=0x250e runnable
[0x00007f3895203000]
java.lang.Thread.State: RUNNABLE
at java.io.FileInputStream.readBytes(Native Method)
at java.io.FileInputStream.read(FileInputStream.java:220)
at
sun.security.provider.SeedGenerator$URLSeedGenerator.getSeedBytes(SeedGenerator.java:493)
at
sun.security.provider.SeedGenerator.generateSeed(SeedGenerator.java:117)
at
sun.security.provider.SecureRandom.engineGenerateSeed(SecureRandom.java:114)
at
sun.security.provider.SecureRandom.engineNextBytes(SecureRandom.java:171)
- locked <0x00000007d8b0ee08> (a sun.security.provider.SecureRandom)
at java.security.SecureRandom.nextBytes(SecureRandom.java:433)
- locked <0x00000007d8b0ee60> (a java.security.SecureRandom)
at java.security.SecureRandom.next(SecureRandom.java:455)
at java.util.Random.nextInt(Random.java:189)
at
org.apache.catalina.util.SessionIdGenerator.createSecureRandom(SessionIdGenerator.java:246)
at
org.apache.catalina.util.SessionIdGenerator.getRandomBytes(SessionIdGenerator.java:183)
at
org.apache.catalina.util.SessionIdGenerator.generateSessionId(SessionIdGenerator.java:153)
at
org.apache.catalina.session.ManagerBase.startInternal(ManagerBase.java:574)
at
org.apache.catalina.session.StandardManager.startInternal(StandardManager.java:466)
- locked <0x00000007d8a327c8> (a
org.apache.catalina.session.StandardManager)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
- locked <0x00000007d8a327c8> (a
org.apache.catalina.session.StandardManager)
at
org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5282)
- locked <0x00000007d89ca578> (a
org.apache.catalina.core.StandardContext)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
- locked <0x00000007d89ca578> (a
org.apache.catalina.core.StandardContext)
at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:895)
at
org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:871)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615)
at
org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1095)
at
org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1617)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Locked ownable synchronizers:
- <0x00000007d89c1290> (a
java.util.concurrent.locks.ReentrantLock$NonfairSync)
Sigh.
I see Sun/Oracle was as helpful as ever on this one:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6521844
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6202721
I'll try the workarounds in the thread you pointed out, thanks.
Anything that Tomcat could do to prevent itself from getting stuck like this?
Thanks,
Dan
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