NoClassDefFoundError: Finalizer$ShutDown (wrong name: Finalizer) under webstart on OS X 10.4

[GoogleCodeExporter]

Originally posted on SO, but redirected here by Kevin Bourrillion:

http://stackoverflow.com/questions/2049807/java-lang-noclassdeffounderror-com-go
ogle-common-base-internal-finalizershutdow

Our application uses the MapMaker class, and we're getting the exception
below, but only on OS X 10.4 using webstart. It works fine when launched
from an app bundle, and on OS X 10.5 and Windows.

This has started happening since our upgrade from RC2 to RC5 (we skipped
all the intervening versions). We've since upgraded to 1.0 final and still
see the issue.

I suspect some interaction with Sun's fix for this security issue [1]
(which changed the way that URL.toString() works in webstart), but don't
have any proof yet.

[1] http://sunsolve.sun.com/search/document.do?assetkey=1-66-238905-1

java.lang.NoClassDefFoundError:
com/google/common/base/internal/Finalizer$ShutDown (wrong name:
com/google/common/base/internal/Finalizer)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2395)
at java.lang.Class.getMethod0(Class.java:2642)
at java.lang.Class.getMethod(Class.java:1579)
at
com.google.common.base.FinalizableReferenceQueue.getStartFinalizer(FinalizableRe
ferenceQueue.java:308)
at
com.google.common.base.FinalizableReferenceQueue.<clinit>(FinalizableReferenceQu
eue.java:102)
at com.google.common.collect.MapMaker$QueueHolder.<clinit>(MapMaker.java:836)
at
com.google.common.collect.MapMaker$SoftValueReference.<init>(MapMaker.java:1078)
at
com.google.common.collect.MapMaker$Strength$2.referenceValue(MapMaker.java:379)
at com.google.common.collect.MapMaker$StrategyImpl.setValue(MapMaker.java:488)
at com.google.common.collect.MapMaker$StrategyImpl.setValue(MapMaker.java:462)
at
com.google.common.collect.CustomConcurrentHashMap$Impl$Segment.put(CustomConcurr
entHashMap.java:960)
at
com.google.common.collect.CustomConcurrentHashMap$Impl.put(CustomConcurrentHashM
ap.java:1438)

Original issue reported on code.google.com by jerith666 on 12 Jan 2010 at 5:59

[GoogleCodeExporter]

Here is some more detailed info about the Java and OS versions, from our
application's log file:

[07:51:55] Java Version  : 1.5.0_19
[07:51:55] os name       : Mac OS X
[07:51:55] os arch       : i386
[07:51:55] os version    : 10.4.11
[07:51:55] VM version    : 1.5.0_19-138

Original comment by jerith666 on 12 Jan 2010 at 6:30

[GoogleCodeExporter]

Here are those same lines for the working .app bundle:

[13:42:49] Java Version  : 1.5.0_19
[13:42:49] os name       : Mac OS X
[13:42:49] os arch       : i386
[13:42:49] os version    : 10.4.11
[13:42:49] VM version    : 1.5.0_19-138

And for the working webstart on OS X 10.5:

[13:38:48] Java Version  : 1.6.0_17
[13:38:48] os name       : Mac OS X
[13:38:48] os arch       : x86_64
[13:38:48] os version    : 10.6.2
[13:38:48] VM version    : 14.3-b01-101

Original comment by jerith666 on 12 Jan 2010 at 6:51

[GoogleCodeExporter]

That last is clearly OS X 10.6, not 10.5; apologies.  This next one is webstart 
on OS
X 10.5 with the java preferences changed to use Java 1.5; it still works.

[13:56:38] Java Version  : 1.5.0_22
[13:56:38] os name       : Mac OS X
[13:56:38] os arch       : ppc
[13:56:38] os version    : 10.5.8
[13:56:38] VM version    : 1.5.0_22-147

Original comment by jerith666 on 12 Jan 2010 at 7:02

[GoogleCodeExporter]

Using a remote debugging connection, I have confirmed that the byte array that
URLClassLoader.defineClass(String,Resource) passes in to
URLClassLoader.defineClass(String,byte[],int,int,CodeSource) is 5030 bytes long,
which is about the size of the Finalizer.class in the google collections jar 
file. 
But the string argument is "com.google.common.base.internal.Finalizer$ShutDown" 
(it's
.class file is only 666 bytes in the jar file).

The Resource argument is a URLClassPath$Loader$1.  I don't have source for
URLClassPath so I'm not sure exactly what that is, but it has the following 
fields
(as visible in the eclipse debugger):

cis, a JarVerifier$VerifierStream
this$0, a URLClassPath$Loader
val$name, a String: "com/google/common/base/internal/Finalizer$ShutDown.class"
val$uc, a JNLPCachedJarURLConnection:
"com.sun.jnlp.JNLPCachedJarURLConnection:jar:http://webstart-qa.carnegielearning
.com/2010/114262/trunk/jars/ct/google-collect.jar!/com/google/common/base/intern
al/Finalizer.class"
val$url, a URL:
"jar:http://webstart-qa.carnegielearning.com/2010/114262/trunk/jars/ct/google-co
llect.jar!/com/google/common/base/internal/Finalizer$ShutDown.class

The val$uc field seems suspicious ...

Original comment by jerith666 on 13 Jan 2010 at 3:56

[GoogleCodeExporter]

Sorry -- the connection that I skipped in comment 4 is that the byte array 
comes from
a call to Resource.getBytes().  So that's why I'm interested in the Resource.

Original comment by jerith666 on 13 Jan 2010 at 3:58

[GoogleCodeExporter]

Here's a debugger screenshot that looks suspicious, too.  The Resource discussed
above is created by calling URLClassPath.getResource (in 
URLClassLoader.findClass(),
line 192).  Looking at that URLClassPath in the debugger, I see that it has a 
handler
buried in it that has a reference directly to the Finalizer.class file.

Original comment by jerith666 on 13 Jan 2010 at 4:04

Attachments:

• google-collect-ws-debug.png

[GoogleCodeExporter]

This sounds like a bug in URLClassLoader on your platform. Specifically, it 
chokes on 
the '$' character and retrieves 'Finalizer.class' instead of 
'Finalizer$ShutDown.class'. We 
could probably work around the bug by making ShutDown a top-level class.

Original comment by crazybob...@gmail.com on 13 Jan 2010 at 10:15

[GoogleCodeExporter]

Thanks for the suggestion.  I've made that change and will report back once our 
QA
department has tested it.

Original comment by jerith666 on 18 Jan 2010 at 2:19

[GoogleCodeExporter]

No luck.  :(  Here's the updated stack trace:

java.lang.NoClassDefFoundError: com/google/common/base/internal/ShutDown (wrong 
name:
com/google/common/base/internal/Finalizer)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
    at java.lang.Class.getDeclaredMethods0(Native Method)
    at java.lang.Class.privateGetDeclaredMethods(Class.java:2395)
    at java.lang.Class.getMethod0(Class.java:2642)
    at java.lang.Class.getMethod(Class.java:1579)
    at com.google.common.base.FinalizableReferenceQueue.getStartFinalizer(Unknown Source)
    at com.google.common.base.FinalizableReferenceQueue.<clinit>(Unknown Source)
    at com.google.common.collect.MapMaker$QueueHolder.<clinit>(Unknown Source)
    at com.google.common.collect.MapMaker$SoftValueReference.<init>(Unknown Source)
    at com.google.common.collect.MapMaker$Strength$2.referenceValue(Unknown Source)
    at com.google.common.collect.MapMaker$StrategyImpl.setValue(Unknown Source)
    at com.google.common.collect.MapMaker$StrategyImpl.setValue(Unknown Source)
    at com.google.common.collect.CustomConcurrentHashMap$Impl$Segment.put(Unknown Source)
    at com.google.common.collect.CustomConcurrentHashMap$Impl.put(Unknown Source)

Original comment by jerith666 on 20 Jan 2010 at 1:37

[GoogleCodeExporter]

Can you please confirm whether or not this is still occurring?

Original comment by fry@google.com on 13 Jan 2011 at 8:18

[GoogleCodeExporter]

I made the following change to our local copy of Google collections back in 
February 2010, and we've since stopped supporting OS X 10.4.  So unfortunately 
I can't easily test whether it's still happening.  :(

Index: trunk/lib/src/com/google/common/base/FinalizableReferenceQueue.java
===================================================================
--- trunk/lib/src/com/google/common/base/FinalizableReferenceQueue.java 
(revision 116187)
+++ trunk/lib/src/com/google/common/base/FinalizableReferenceQueue.java 
(revision 116188)
@@ -98,7 +98,7 @@
   private static final Method startFinalizer;
   static {
     Class<?> finalizer = loadFinalizer(
-        new SystemLoader(), new DecoupledLoader(), new DirectLoader());
+        new SystemLoader() /*new DecoupledLoader()*/, new DirectLoader());
     startFinalizer = getStartFinalizer(finalizer);
   }

Original comment by jerith666 on 13 Jan 2011 at 8:35

[GoogleCodeExporter]

Since this looked like a problem outside of MapMaker, and a workaround has been 
found. I'm closing this bug.

Original comment by yrfselrahc@gmail.com on 13 Jan 2011 at 9:07

• Changed state: WontFix

[GoogleCodeExporter]

Cf. #1505.

Original comment by jgl...@cloudbees.com on 14 Aug 2013 at 12:52

[GoogleCodeExporter]

This issue has been migrated to GitHub.

It can be found at https://github.com/google/guava/issues/<id>

Original comment by cgdecker@google.com on 1 Nov 2014 at 4:16

• Added labels: MigratedToGitHub

[GoogleCodeExporter]

Original comment by cgdecker@google.com on 3 Nov 2014 at 9:10

• Added labels: Restrict-AddIssueComment-Commit