# Exception when using ES 1.3.1 Caused by: java.lang.IncompatibleClassChangeError: Implementing class

**URL:** <https://discuss.elastic.co/t/exception-when-using-es-1-3-1-caused-by-java-lang-incompatibleclasschangeerror-implementing-class/18971>\
**Category:** Elasticsearch\
**Created:** [July 30, 2014, 8:41am UTC](https://discuss.elastic.co/t/exception-when-using-es-1-3-1-caused-by-java-lang-incompatibleclasschangeerror-implementing-class/18971 "2014-07-30T08:41:15Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![ElasticSearch\_Users\_](https://avatars.discourse-cdn.com/v4/letter/e/b4bc9f/32.png) [@ElasticSearch\_Users\_](https://discuss.elastic.co/u/ElasticSearch_Users_)\
**Post date:** [July 30, 2014, 8:41am UTC](https://discuss.elastic.co/t/exception-when-using-es-1-3-1-caused-by-java-lang-incompatibleclasschangeerror-implementing-class/18971/1 "2014-07-30T08:41:15Z")

</div>

Hello,

I have a project using Play framework version 1.2.7 which used ES 1.1.1.  
I wanted to update it to the latest and greatest (1.3.1), but encountered  
the following exception when running the unit tests within the play  
framework:

An unexpected error occured caused by exception  
IncompatibleClassChangeError: Implementing class

(see full trace below)

I'm using Java7 (1.7.0\_51).

ES 1.2.3 has no issue, it starts with 1.3.0 to exhibit this problem.

I have looked at the issue and it seems it's caused by not using the right  
class version, but I wasn't able to pin point to the exact one.

Has anyone encounter this or know which particular class may introduce this  
issue?

Thanks,

Greg

An unexpected error occured caused by exception  
IncompatibleClassChangeError: Implementing class

play.exceptions.UnexpectedException: Unexpected Error

at play.Invoker$Invocation.onException(Invoker.java:244)

at play.Invoker$Invocation.run(Invoker.java:286)

at Invocation.HTTP Request(Play!)

Caused by: java.lang.IncompatibleClassChangeError: Implementing class

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClass(ClassLoader.java:800)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)

at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)

at java.net.URLClassLoader.access$100(URLClassLoader.java:71)

at java.net.URLClassLoader$1.run(URLClassLoader.java:361)

at java.net.URLClassLoader$1.run(URLClassLoader.java:355)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:354)

at java.lang.ClassLoader.loadClass(ClassLoader.java:425)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)

at java.lang.ClassLoader.loadClass(ClassLoader.java:358)

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClass(ClassLoader.java:800)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)

at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)

at java.net.URLClassLoader.access$100(URLClassLoader.java:71)

at java.net.URLClassLoader$1.run(URLClassLoader.java:361)

at java.net.URLClassLoader$1.run(URLClassLoader.java:355)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:354)

at java.lang.ClassLoader.loadClass(ClassLoader.java:425)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)

at java.lang.ClassLoader.loadClass(ClassLoader.java:358)

at  
play.classloading.enhancers.ContinuationEnhancer.enhanceThisClass(ContinuationEnhancer.java:74)

at play.CorePlugin.enhance(CorePlugin.java:297)

at play.plugins.PluginCollection.enhance(PluginCollection.java:551)

at  
play.classloading.ApplicationClasses$ApplicationClass.enhance(ApplicationClasses.java:235)

at  
play.classloading.ApplicationClassloader.loadApplicationClass(ApplicationClassloader.java:167)

at  
play.classloading.ApplicationClassloader.getAllClasses(ApplicationClassloader.java:431)

at play.Play.start(Play.java:523)

at play.Play.detectChanges(Play.java:649)

at play.Invoker$Invocation.init(Invoker.java:198)

... 1 more

10:21:21,858 ERROR ~ Error during the 500 response generation

java.lang.IncompatibleClassChangeError: Implementing class

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClass(ClassLoader.java:800)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)

at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)

at java.net.URLClassLoader.access$100(URLClassLoader.java:71)

at java.net.URLClassLoader$1.run(URLClassLoader.java:361)

at java.net.URLClassLoader$1.run(URLClassLoader.java:355)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:354)

at java.lang.ClassLoader.loadClass(ClassLoader.java:425)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)

at java.lang.ClassLoader.loadClass(ClassLoader.java:358)

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClass(ClassLoader.java:800)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)

at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)

at java.net.URLClassLoader.access$100(URLClassLoader.java:71)

at java.net.URLClassLoader$1.run(URLClassLoader.java:361)

at java.net.URLClassLoader$1.run(URLClassLoader.java:355)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:354)

at java.lang.ClassLoader.loadClass(ClassLoader.java:425)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)

at java.lang.ClassLoader.loadClass(ClassLoader.java:358)

at  
play.classloading.enhancers.ContinuationEnhancer.enhanceThisClass(ContinuationEnhancer.java:74)

at play.CorePlugin.enhance(CorePlugin.java:297)

at play.plugins.PluginCollection.enhance(PluginCollection.java:551)

at  
play.classloading.ApplicationClasses$ApplicationClass.enhance(ApplicationClasses.java:235)

at  
play.classloading.ApplicationClassloader.loadApplicationClass(ApplicationClassloader.java:167)

at  
play.classloading.ApplicationClassloader.loadClass(ApplicationClassloader.java:84)

at java.lang.ClassLoader.loadClass(ClassLoader.java:358)

at  
play.classloading.ApplicationClasses.getAssignableClasses(ApplicationClasses.java:67)

at  
play.classloading.ApplicationClassloader.getAssignableClasses(ApplicationClassloader.java:457)

at  
play.templates.GroovyTemplateCompiler.endTag(GroovyTemplateCompiler.java:342)

at play.templates.TemplateCompiler.generate(TemplateCompiler.java:93)

at play.templates.TemplateCompiler.compile(TemplateCompiler.java:15)

at  
play.templates.GroovyTemplateCompiler.compile(GroovyTemplateCompiler.java:41)

at play.templates.TemplateCompiler.compile(TemplateCompiler.java:28)

at play.templates.TemplateLoader.load(TemplateLoader.java:82)

at play.templates.TemplateLoader.load(TemplateLoader.java:172)

at play.server.PlayHandler.serve500(PlayHandler.java:784)

at play.server.PlayHandler$NettyInvocation.run(PlayHandler.java:232)

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)

at java.util.concurrent.FutureTask.run(FutureTask.java:262)

at  
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178)

at  
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292)

at  
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

at  
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

at java.lang.Thread.run(Thread.java:744)

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<div class="post-metadata">

**Author:** ![jprante](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jprante/32/44941_2.png) [@jprante](https://discuss.elastic.co/u/jprante)\
**Post date:** [July 30, 2014, 9:45am UTC](https://discuss.elastic.co/t/exception-when-using-es-1-3-1-caused-by-java-lang-incompatibleclasschangeerror-implementing-class/18971/2 "2014-07-30T09:45:20Z")

</div>

This is a dependency problem. Check your classpath if you have clean  
dependencies to ES 1.3.1 code only.

Jörg

On Wed, Jul 30, 2014 at 10:41 AM, gregorymaertens via elasticsearch \<  
[elasticsearch@googlegroups.com](mailto:elasticsearch@googlegroups.com)\> wrote:

> Hello,
> 
> I have a project using Play framework version 1.2.7 which used ES 1.1.1.  
> I wanted to update it to the latest and greatest (1.3.1), but encountered  
> the following exception when running the unit tests within the play  
> framework:
> 
> An unexpected error occured caused by exception  
> IncompatibleClassChangeError: Implementing class
> 
> (see full trace below)
> 
> I'm using Java7 (1.7.0\_51).
> 
> ES 1.2.3 has no issue, it starts with 1.3.0 to exhibit this problem.
> 
> I have looked at the issue and it seems it's caused by not using the right  
> class version, but I wasn't able to pin point to the exact one.
> 
> Has anyone encounter this or know which particular class may introduce  
> this issue?
> 
> Thanks,
> 
> Greg
> 
> An unexpected error occured caused by exception  
> IncompatibleClassChangeError: Implementing class
> 
> play.exceptions.UnexpectedException: Unexpected Error
> 
> at play.Invoker$Invocation.onException(Invoker.java:244)
> 
> at play.Invoker$Invocation.run(Invoker.java:286)
> 
> at Invocation.HTTP Request(Play!)
> 
> Caused by: java.lang.IncompatibleClassChangeError: Implementing class
> 
> at java.lang.ClassLoader.defineClass1(Native Method)
> 
> at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
> 
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
> 
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
> 
> at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
> 
> at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
> 
> at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
> 
> at java.security.AccessController.doPrivileged(Native Method)
> 
> at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
> 
> at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
> 
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
> 
> at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
> 
> at java.lang.ClassLoader.defineClass1(Native Method)
> 
> at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
> 
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
> 
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
> 
> at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
> 
> at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
> 
> at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
> 
> at java.security.AccessController.doPrivileged(Native Method)
> 
> at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
> 
> at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
> 
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
> 
> at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
> 
> at  
> play.classloading.enhancers.ContinuationEnhancer.enhanceThisClass(ContinuationEnhancer.java:74)
> 
> at play.CorePlugin.enhance(CorePlugin.java:297)
> 
> at play.plugins.PluginCollection.enhance(PluginCollection.java:551)
> 
> at  
> play.classloading.ApplicationClasses$ApplicationClass.enhance(ApplicationClasses.java:235)
> 
> at  
> play.classloading.ApplicationClassloader.loadApplicationClass(ApplicationClassloader.java:167)
> 
> at  
> play.classloading.ApplicationClassloader.getAllClasses(ApplicationClassloader.java:431)
> 
> at play.Play.start(Play.java:523)
> 
> at play.Play.detectChanges(Play.java:649)
> 
> at play.Invoker$Invocation.init(Invoker.java:198)
> 
> ... 1 more
> 
> 10:21:21,858 ERROR ~ Error during the 500 response generation
> 
> java.lang.IncompatibleClassChangeError: Implementing class
> 
> at java.lang.ClassLoader.defineClass1(Native Method)
> 
> at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
> 
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
> 
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
> 
> at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
> 
> at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
> 
> at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
> 
> at java.security.AccessController.doPrivileged(Native Method)
> 
> at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
> 
> at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
> 
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
> 
> at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
> 
> at java.lang.ClassLoader.defineClass1(Native Method)
> 
> at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
> 
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
> 
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
> 
> at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
> 
> at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
> 
> at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
> 
> at java.security.AccessController.doPrivileged(Native Method)
> 
> at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
> 
> at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
> 
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
> 
> at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
> 
> at  
> play.classloading.enhancers.ContinuationEnhancer.enhanceThisClass(ContinuationEnhancer.java:74)
> 
> at play.CorePlugin.enhance(CorePlugin.java:297)
> 
> at play.plugins.PluginCollection.enhance(PluginCollection.java:551)
> 
> at  
> play.classloading.ApplicationClasses$ApplicationClass.enhance(ApplicationClasses.java:235)
> 
> at  
> play.classloading.ApplicationClassloader.loadApplicationClass(ApplicationClassloader.java:167)
> 
> at  
> play.classloading.ApplicationClassloader.loadClass(ApplicationClassloader.java:84)
> 
> at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
> 
> at  
> play.classloading.ApplicationClasses.getAssignableClasses(ApplicationClasses.java:67)
> 
> at  
> play.classloading.ApplicationClassloader.getAssignableClasses(ApplicationClassloader.java:457)
> 
> at  
> play.templates.GroovyTemplateCompiler.endTag(GroovyTemplateCompiler.java:342)
> 
> at play.templates.TemplateCompiler.generate(TemplateCompiler.java:93)
> 
> at play.templates.TemplateCompiler.compile(TemplateCompiler.java:15)
> 
> at  
> play.templates.GroovyTemplateCompiler.compile(GroovyTemplateCompiler.java:41)
> 
> at play.templates.TemplateCompiler.compile(TemplateCompiler.java:28)
> 
> at play.templates.TemplateLoader.load(TemplateLoader.java:82)
> 
> at play.templates.TemplateLoader.load(TemplateLoader.java:172)
> 
> at play.server.PlayHandler.serve500(PlayHandler.java:784)
> 
> at play.server.PlayHandler$NettyInvocation.run(PlayHandler.java:232)
> 
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
> 
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> 
> at  
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178)
> 
> at  
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292)
> 
> at  
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> 
> at  
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> 
> at java.lang.Thread.run(Thread.java:744)
> 
> --  
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> .  
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<div class="post-metadata">

**Author:** ![Stephan\_Baune](https://avatars.discourse-cdn.com/v4/letter/s/59ef9b/32.png) [@Stephan\_Baune](https://discuss.elastic.co/u/Stephan_Baune)\
**Post date:** [January 30, 2015, 1:30pm UTC](https://discuss.elastic.co/t/exception-when-using-es-1-3-1-caused-by-java-lang-incompatibleclasschangeerror-implementing-class/18971/3 "2015-01-30T13:30:54Z")

</div>

Hey Greg,

I'm facing the same issue:

- Play 1.2.7
- Trying to upgrade the embedded ES dependency from 1.0.0 to 1.4.2
- IncompatibleClassChangeError, identical stack trace
- Updating to Elasticsearch 1.2.x works

Could you resolve the issue? If so - how? 🙂

Thx,  
Stephan

Am Mittwoch, 30. Juli 2014 10:41:15 UTC+2 schrieb [gregory...@yahoo.fr](mailto:gregory...@yahoo.fr):

> Hello,
> 
> I have a project using Play framework version 1.2.7 which used ES 1.1.1.  
> I wanted to update it to the latest and greatest (1.3.1), but encountered  
> the following exception when running the unit tests within the play  
> framework:
> 
> An unexpected error occured caused by exception  
> IncompatibleClassChangeError: Implementing class
> 
> (see full trace below)
> 
> I'm using Java7 (1.7.0\_51).
> 
> ES 1.2.3 has no issue, it starts with 1.3.0 to exhibit this problem.
> 
> I have looked at the issue and it seems it's caused by not using the right  
> class version, but I wasn't able to pin point to the exact one.
> 
> Has anyone encounter this or know which particular class may introduce  
> this issue?
> 
> Thanks,
> 
> Greg
> 
> An unexpected error occured caused by exception  
> IncompatibleClassChangeError: Implementing class
> 
> play.exceptions.UnexpectedException: Unexpected Error
> 
> at play.Invoker$Invocation.onException(Invoker.java:244)
> 
> at play.Invoker$Invocation.run(Invoker.java:286)
> 
> at Invocation.HTTP Request(Play!)
> 
> Caused by: java.lang.IncompatibleClassChangeError: Implementing class
> 
> at java.lang.ClassLoader.defineClass1(Native Method)
> 
> at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
> 
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
> 
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
> 
> at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
> 
> at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
> 
> at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
> 
> at java.security.AccessController.doPrivileged(Native Method)
> 
> at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
> 
> at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
> 
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
> 
> at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
> 
> at java.lang.ClassLoader.defineClass1(Native Method)
> 
> at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
> 
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
> 
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
> 
> at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
> 
> at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
> 
> at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
> 
> at java.security.AccessController.doPrivileged(Native Method)
> 
> at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
> 
> at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
> 
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
> 
> at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
> 
> at  
> play.classloading.enhancers.ContinuationEnhancer.enhanceThisClass(ContinuationEnhancer.java:74)
> 
> at play.CorePlugin.enhance(CorePlugin.java:297)
> 
> at play.plugins.PluginCollection.enhance(PluginCollection.java:551)
> 
> at  
> play.classloading.ApplicationClasses$ApplicationClass.enhance(ApplicationClasses.java:235)
> 
> at  
> play.classloading.ApplicationClassloader.loadApplicationClass(ApplicationClassloader.java:167)
> 
> at  
> play.classloading.ApplicationClassloader.getAllClasses(ApplicationClassloader.java:431)
> 
> at play.Play.start(Play.java:523)
> 
> at play.Play.detectChanges(Play.java:649)
> 
> at play.Invoker$Invocation.init(Invoker.java:198)
> 
> ... 1 more
> 
> 10:21:21,858 ERROR ~ Error during the 500 response generation
> 
> java.lang.IncompatibleClassChangeError: Implementing class
> 
> at java.lang.ClassLoader.defineClass1(Native Method)
> 
> at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
> 
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
> 
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
> 
> at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
> 
> at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
> 
> at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
> 
> at java.security.AccessController.doPrivileged(Native Method)
> 
> at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
> 
> at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
> 
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
> 
> at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
> 
> at java.lang.ClassLoader.defineClass1(Native Method)
> 
> at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
> 
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
> 
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
> 
> at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
> 
> at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
> 
> at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
> 
> at java.security.AccessController.doPrivileged(Native Method)
> 
> at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
> 
> at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
> 
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
> 
> at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
> 
> at  
> play.classloading.enhancers.ContinuationEnhancer.enhanceThisClass(ContinuationEnhancer.java:74)
> 
> at play.CorePlugin.enhance(CorePlugin.java:297)
> 
> at play.plugins.PluginCollection.enhance(PluginCollection.java:551)
> 
> at  
> play.classloading.ApplicationClasses$ApplicationClass.enhance(ApplicationClasses.java:235)
> 
> at  
> play.classloading.ApplicationClassloader.loadApplicationClass(ApplicationClassloader.java:167)
> 
> at  
> play.classloading.ApplicationClassloader.loadClass(ApplicationClassloader.java:84)
> 
> at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
> 
> at  
> play.classloading.ApplicationClasses.getAssignableClasses(ApplicationClasses.java:67)
> 
> at  
> play.classloading.ApplicationClassloader.getAssignableClasses(ApplicationClassloader.java:457)
> 
> at  
> play.templates.GroovyTemplateCompiler.endTag(GroovyTemplateCompiler.java:342)
> 
> at play.templates.TemplateCompiler.generate(TemplateCompiler.java:93)
> 
> at play.templates.TemplateCompiler.compile(TemplateCompiler.java:15)
> 
> at  
> play.templates.GroovyTemplateCompiler.compile(GroovyTemplateCompiler.java:41)
> 
> at play.templates.TemplateCompiler.compile(TemplateCompiler.java:28)
> 
> at play.templates.TemplateLoader.load(TemplateLoader.java:82)
> 
> at play.templates.TemplateLoader.load(TemplateLoader.java:172)
> 
> at play.server.PlayHandler.serve500(PlayHandler.java:784)
> 
> at play.server.PlayHandler$NettyInvocation.run(PlayHandler.java:232)
> 
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
> 
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> 
> at  
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178)
> 
> at  
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292)
> 
> at  
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> 
> at  
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> 
> at java.lang.Thread.run(Thread.java:744)

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---

<div class="post-metadata">

**Author:** ![hadoopresearcher](https://avatars.discourse-cdn.com/v4/letter/h/87869e/32.png) [@hadoopresearcher](https://discuss.elastic.co/u/hadoopresearcher)\
**Post date:** [December 29, 2016, 6:08am UTC](https://discuss.elastic.co/t/exception-when-using-es-1-3-1-caused-by-java-lang-incompatibleclasschangeerror-implementing-class/18971/4 "2016-12-29T06:08:41Z")

</div>

**hello,i am getting the same error by using elasticsearch-5.0.1**

```
java.lang.IncompatibleClassChangeError: Implementing class
        at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.8.0_101]
        at java.lang.ClassLoader.defineClass(ClassLoader.java:763) ~[?:1.8.0_101]
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[?:1.8.0_101]
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) ~[?:1.8.0_101]
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73) ~[?:1.8.0_101]
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368) ~[?:1.8.0_101]
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362) ~[?:1.8.0_101]
        at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_101]
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361) ~[?:1.8.0_101]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_101]
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) ~[?:1.8.0_101]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_101]
        at org.apache.storm.elasticsearch.common.EsConfig.toBasicSettings(EsConfig.java:77) ~[storm-elasticsearch-1.0.2.jar:1.0.2]
        at org.apache.storm.elasticsearch.common.StormElasticSearchClient.construct(StormElasticSearchClient.java:36) ~[storm-elasticsearch-1.0.2.jar:1.0.2]
        at org.apache.storm.elasticsearch.bolt.AbstractEsBolt.prepare(AbstractEsBolt.java:57) ~[storm-elasticsearch-1.0.2.jar:1.0.2]
        at org.apache.storm.elasticsearch.bolt.EsIndexBolt.prepare(EsIndexBolt.java:49) ~[storm-elasticsearch-1.0.2.jar:1.0.2]
        at org.apache.storm.daemon.executor$fn __8058$fn__ 8071.invoke(executor.clj:795) ~[storm-core-1.0.2.jar:1.0.2]
        at org.apache.storm.util$async_loop$fn__624.invoke(util.clj:482) [storm-core-1.0.2.jar:1.0.2]
        at clojure.lang.AFn.run(AFn.java:22) [clojure-1.7.0.jar:?]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_101]

```

**Esconfig line no 77 is**

```
 Settings toBasicSettings() {
        return ImmutableSettings.settingsBuilder()
                                .put("cluster.name", clusterName)
                                .put(additionalConfiguration)
                                .build();
```

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 5, 2017, 10:04pm UTC](https://discuss.elastic.co/t/exception-when-using-es-1-3-1-caused-by-java-lang-incompatibleclasschangeerror-implementing-class/18971/5 "2017-07-05T22:04:38Z")

</div>