# ClassNotFoundException: kuromoji\_tokenizer

**URL:** <https://discuss.elastic.co/t/classnotfoundexception-kuromoji-tokenizer/9693>\
**Category:** Elasticsearch\
**Created:** [November 13, 2012, 10:52am UTC](https://discuss.elastic.co/t/classnotfoundexception-kuromoji-tokenizer/9693 "2012-11-13T10:52:36Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![hirotakaster](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/hirotakaster/32/2625_2.png) [@hirotakaster](https://discuss.elastic.co/u/hirotakaster)\
**Post date:** [November 13, 2012, 10:52am UTC](https://discuss.elastic.co/t/classnotfoundexception-kuromoji-tokenizer/9693/1 "2012-11-13T10:52:36Z")

</div>

Hi guys,

I try to use Japanese(Kuromoji)Analysis plugin, but can't use  
kuromoji\_tokenizer by ClassNotFoundException.  
here is comman line.

wget  
[https://github.com/downloads/elasticsearch/elasticsearch/elasticsearch-0.19.11.tar.gz](https://github.com/downloads/elasticsearch/elasticsearch/elasticsearch-0.19.11.tar.gz)  
.  
tar -zxvf elasticsearch-0.19.11.tar.gz  
cd elasticsearch-0.19.11  
bin/plugin -install elasticsearch/elasticsearch-analysis-kuromoji/1.0.0  
bin/elasticsearch  
curl -XPUT '[http://localhost:9200/wiki/](http://localhost:9200/wiki/)' -d'  
{  
"index" : {  
"analysis" : {  
"tokenizer" : {  
"kuromoji" : {  
"type" : " kuromoji\_tokenizer"  
}  
}  
}  
}  
}  
'  
"error":"IndexCreationException[[wiki] failed to create index]; nested:  
ElasticSearchIllegalArgumentException[failed to find tokenizer type [  
kuromoji\_tokenizer] for [kuromoji]]; nested:  
NoClassSettingsException[Failed to load class setting [type] with value [  
kuromoji\_tokenizer]]; nested: ClassNotFoundException[kuromoji\_tokenizer];  
","status":500}

And following is elasticsearch.log.

org.elasticsearch.indices.IndexCreationException: [wiki] failed to create  
index  
at  
org.elasticsearch.indices.InternalIndicesService.createIndex(InternalIndicesService.java:289)  
at  
org.elasticsearch.cluster.metadata.MetaDataCreateIndexService$1.execute(MetaDataCreateIndexService.java:241)  
at  
org.elasticsearch.cluster.service.InternalClusterService$2.run(InternalClusterService.java:208)  
at  
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)  
at  
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)  
at java.lang.Thread.run(Thread.java:662)  
Caused by: org.elasticsearch.ElasticSearchIllegalArgumentException: failed  
to find tokenizer type [kuromoji\_tokenizer] for [kuromoji]  
at  
org.elasticsearch.index.analysis.AnalysisModule.configure(AnalysisModule.java:308)  
at  
org.elasticsearch.common.inject.AbstractModule.configure(AbstractModule.java:60)  
at  
org.elasticsearch.common.inject.spi.Elements$RecordingBinder.install(Elements.java:201)  
at  
org.elasticsearch.common.inject.spi.Elements.getElements(Elements.java:82)  
at  
org.elasticsearch.common.inject.InjectorShell$Builder.build(InjectorShell.java:130)  
at  
org.elasticsearch.common.inject.InjectorBuilder.build(InjectorBuilder.java:99)  
at  
org.elasticsearch.common.inject.InjectorImpl.createChildInjector(InjectorImpl.java:129)  
at  
org.elasticsearch.common.inject.ModulesBuilder.createChildInjector(ModulesBuilder.java:66)  
at  
org.elasticsearch.indices.InternalIndicesService.createIndex(InternalIndicesService.java:287)  
... 5 more  
Caused by: org.elasticsearch.common.settings.NoClassSettingsException:  
Failed to load class setting [type] with value [kuromoji\_tokenizer]  
at  
org.elasticsearch.common.settings.ImmutableSettings.getAsClass(ImmutableSettings.java:243)  
at  
org.elasticsearch.index.analysis.AnalysisModule.configure(AnalysisModule.java:298)  
... 13 more  
Caused by: java.lang.ClassNotFoundException: kuromoji\_tokenizer  
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)  
at java.security.AccessController.doPrivileged(Native Method)  
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)  
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)  
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)  
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)  
at  
org.elasticsearch.common.settings.ImmutableSettings.getAsClass(ImmutableSettings.java:227)  
... 14 more

then I use only kuromoji analyzer, creating index and mapping is success,  
can index documents.

curl -XPUT '[http://localhost:9200/wiki/](http://localhost:9200/wiki/)'  
curl -XPUT '[http://localhost:9200/wiki/page/\_mapping](http://localhost:9200/wiki/page/_mapping)' -d '  
{  
"page" : {  
"properties" : {  
"title" : { "type" : "string", "index" : "analyzed",  
"analyzer":"kuromoji", "store" : "yes"},  
"text" : { "type" : "string", "index" : "analyzed",  
"analyzer":"kuromoji", "store" : "yes"}  
}  
}  
}  
'

I don't know why kuromoji\_tokenizer occur ClassNotFound Exception, but even  
then kuromoji analyzer can use.  
Is there anything wrong steps for using kuromoji\_tokenizer ?

Thank you,  
hirotakaster

--

---

<div class="post-metadata">

**Author:** ![mvg](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mvg/32/98890_2.png) [@mvg](https://discuss.elastic.co/u/mvg)\
**Post date:** [November 13, 2012, 1:29pm UTC](https://discuss.elastic.co/t/classnotfoundexception-kuromoji-tokenizer/9693/2 "2012-11-13T13:29:42Z")

</div>

Hi Hirotakaster,

The tokenizer 'kuromoji\_tokenizer' isn't available in version 1.0.0,  
so that is the reason why kuromoji\_tokenizer can't be found.  
Also I noticed that you had a whitespace before the tokenizer name:  
"type" : " kuromoji\_tokenizer"  
This also results in the tokenizer not being found.

I'll make a 1.1.0 release soon.

If you're impatient you can always try to build the project yourself  
by cloning the project  
([GitHub - elastic/elasticsearch-analysis-kuromoji: Japanese (kuromoji) Analysis Plugin](https://github.com/elasticsearch/elasticsearch-analysis-kuromoji/))  
and run: 'mvn clean package'

After this replace the 1.0.0 plugin jar file in the plugins directory  
with the jar file that you've build with Maven.

Martijn

On 13 November 2012 11:52, hirotakaster [hirotakaster@gmail.com](mailto:hirotakaster@gmail.com) wrote:

> Hi guys,
> 
> I try to use Japanese(Kuromoji)Analysis plugin, but can't use  
> kuromoji\_tokenizer by ClassNotFoundException.  
> here is comman line.
> 
> wget  
> [https://github.com/downloads/elasticsearch/elasticsearch/elasticsearch-0.19.11.tar.gz](https://github.com/downloads/elasticsearch/elasticsearch/elasticsearch-0.19.11.tar.gz)  
> .  
> tar -zxvf elasticsearch-0.19.11.tar.gz  
> cd elasticsearch-0.19.11  
> bin/plugin -install elasticsearch/elasticsearch-analysis-kuromoji/1.0.0  
> bin/elasticsearch  
> curl -XPUT '[http://localhost:9200/wiki/](http://localhost:9200/wiki/)' -d'  
> {  
> "index" : {  
> "analysis" : {  
> "tokenizer" : {  
> "kuromoji" : {  
> "type" : " kuromoji\_tokenizer"  
> }  
> }  
> }  
> }  
> }  
> '  
> "error":"IndexCreationException[[wiki] failed to create index]; nested:  
> ElasticSearchIllegalArgumentException[failed to find tokenizer type [  
> kuromoji\_tokenizer] for [kuromoji]]; nested: NoClassSettingsException[Failed  
> to load class setting [type] with value [kuromoji\_tokenizer]]; nested:  
> ClassNotFoundException[kuromoji\_tokenizer]; ","status":500}
> 
> And following is elasticsearch.log.
> 
> org.elasticsearch.indices.IndexCreationException: [wiki] failed to create  
> index  
> at  
> org.elasticsearch.indices.InternalIndicesService.createIndex(InternalIndicesService.java:289)  
> at  
> org.elasticsearch.cluster.metadata.MetaDataCreateIndexService$1.execute(MetaDataCreateIndexService.java:241)  
> at  
> org.elasticsearch.cluster.service.InternalClusterService$2.run(InternalClusterService.java:208)  
> at  
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)  
> at  
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)  
> at java.lang.Thread.run(Thread.java:662)  
> Caused by: org.elasticsearch.ElasticSearchIllegalArgumentException: failed  
> to find tokenizer type [kuromoji\_tokenizer] for [kuromoji]  
> at  
> org.elasticsearch.index.analysis.AnalysisModule.configure(AnalysisModule.java:308)  
> at  
> org.elasticsearch.common.inject.AbstractModule.configure(AbstractModule.java:60)  
> at  
> org.elasticsearch.common.inject.spi.Elements$RecordingBinder.install(Elements.java:201)  
> at  
> org.elasticsearch.common.inject.spi.Elements.getElements(Elements.java:82)  
> at  
> org.elasticsearch.common.inject.InjectorShell$Builder.build(InjectorShell.java:130)  
> at  
> org.elasticsearch.common.inject.InjectorBuilder.build(InjectorBuilder.java:99)  
> at  
> org.elasticsearch.common.inject.InjectorImpl.createChildInjector(InjectorImpl.java:129)  
> at  
> org.elasticsearch.common.inject.ModulesBuilder.createChildInjector(ModulesBuilder.java:66)  
> at  
> org.elasticsearch.indices.InternalIndicesService.createIndex(InternalIndicesService.java:287)  
> ... 5 more  
> Caused by: org.elasticsearch.common.settings.NoClassSettingsException:  
> Failed to load class setting [type] with value [kuromoji\_tokenizer]  
> at  
> org.elasticsearch.common.settings.ImmutableSettings.getAsClass(ImmutableSettings.java:243)  
> at  
> org.elasticsearch.index.analysis.AnalysisModule.configure(AnalysisModule.java:298)  
> ... 13 more  
> Caused by: java.lang.ClassNotFoundException: kuromoji\_tokenizer  
> at java.net.URLClassLoader$1.run(URLClassLoader.java:202)  
> at java.security.AccessController.doPrivileged(Native Method)  
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)  
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)  
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)  
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)  
> at  
> org.elasticsearch.common.settings.ImmutableSettings.getAsClass(ImmutableSettings.java:227)  
> ... 14 more
> 
> then I use only kuromoji analyzer, creating index and mapping is success,  
> can index documents.
> 
> curl -XPUT '[http://localhost:9200/wiki/](http://localhost:9200/wiki/)'  
> curl -XPUT '[http://localhost:9200/wiki/page/\_mapping](http://localhost:9200/wiki/page/_mapping)' -d '  
> {  
> "page" : {  
> "properties" : {  
> "title" : { "type" : "string", "index" : "analyzed",  
> "analyzer":"kuromoji", "store" : "yes"},  
> "text" : { "type" : "string", "index" : "analyzed",  
> "analyzer":"kuromoji", "store" : "yes"}  
> }  
> }  
> }  
> '
> 
> I don't know why kuromoji\_tokenizer occur ClassNotFound Exception, but even  
> then kuromoji analyzer can use.  
> Is there anything wrong steps for using kuromoji\_tokenizer ?
> 
> Thank you,  
> hirotakaster
> 
> --

--  
Met vriendelijke groet,

Martijn van Groningen

--

---

<div class="post-metadata">

**Author:** ![hirotakaster](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/hirotakaster/32/2625_2.png) [@hirotakaster](https://discuss.elastic.co/u/hirotakaster)\
**Post date:** [November 13, 2012, 2:49pm UTC](https://discuss.elastic.co/t/classnotfoundexception-kuromoji-tokenizer/9693/3 "2012-11-13T14:49:28Z")

</div>

Hi Martijn,

Thanks for your advice!!  
I known this github but I think that version is 1.0.0, so I didn't know why kuromoji\_tokenizer  
included.  
I will try to build this with your advice.

Thank you sincerely,  
hirotakater

2012年11月13日火曜日 22時31分42秒 UTC+9 Martijn v Groningen:

> Hi Hirotakaster,
> 
> The tokenizer 'kuromoji\_tokenizer' isn't available in version 1.0.0,  
> so that is the reason why kuromoji\_tokenizer can't be found.  
> Also I noticed that you had a whitespace before the tokenizer name:  
> "type" : " kuromoji\_tokenizer"  
> This also results in the tokenizer not being found.
> 
> I'll make a 1.1.0 release soon.
> 
> If you're impatient you can always try to build the project yourself  
> by cloning the project  
> ([GitHub - elastic/elasticsearch-analysis-kuromoji: Japanese (kuromoji) Analysis Plugin](https://github.com/elasticsearch/elasticsearch-analysis-kuromoji/))  
> and run: 'mvn clean package'
> 
> After this replace the 1.0.0 plugin jar file in the plugins directory  
> with the jar file that you've build with Maven.
> 
> Martijn
> 
> On 13 November 2012 11:52, hirotakaster \<[hirota...@gmail.com](mailto:hirota...@gmail.com) \<javascript:\>\>  
> wrote:
> 
> > Hi guys,
> > 
> > I try to use Japanese(Kuromoji)Analysis plugin, but can't use  
> > kuromoji\_tokenizer by ClassNotFoundException.  
> > here is comman line.
> > 
> > wget
> 
> [https://github.com/downloads/elasticsearch/elasticsearch/elasticsearch-0.19.11.tar.gz](https://github.com/downloads/elasticsearch/elasticsearch/elasticsearch-0.19.11.tar.gz)
> 
> > .  
> > tar -zxvf elasticsearch-0.19.11.tar.gz  
> > cd elasticsearch-0.19.11  
> > bin/plugin -install elasticsearch/elasticsearch-analysis-kuromoji/1.0.0  
> > bin/elasticsearch  
> > curl -XPUT '[http://localhost:9200/wiki/](http://localhost:9200/wiki/)' -d'  
> > {  
> > "index" : {  
> > "analysis" : {  
> > "tokenizer" : {  
> > "kuromoji" : {  
> > "type" : " kuromoji\_tokenizer"  
> > }  
> > }  
> > }  
> > }  
> > }  
> > '  
> > "error":"IndexCreationException[[wiki] failed to create index]; nested:  
> > ElasticSearchIllegalArgumentException[failed to find tokenizer type [  
> > kuromoji\_tokenizer] for [kuromoji]]; nested:  
> > NoClassSettingsException[Failed  
> > to load class setting [type] with value [kuromoji\_tokenizer]]; nested:  
> > ClassNotFoundException[kuromoji\_tokenizer]; ","status":500}
> > 
> > And following is elasticsearch.log.
> > 
> > org.elasticsearch.indices.IndexCreationException: [wiki] failed to  
> > create  
> > index  
> > at
> 
> org.elasticsearch.indices.InternalIndicesService.createIndex(InternalIndicesService.java:289)
> 
> > at
> 
> org.elasticsearch.cluster.metadata.MetaDataCreateIndexService$1.execute(MetaDataCreateIndexService.java:241)
> 
> > at
> 
> org.elasticsearch.cluster.service.InternalClusterService$2.run(InternalClusterService.java:208)
> 
> > at
> 
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> 
> > at
> 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> 
> > at java.lang.Thread.run(Thread.java:662)  
> > Caused by: org.elasticsearch.ElasticSearchIllegalArgumentException:  
> > failed  
> > to find tokenizer type [kuromoji\_tokenizer] for [kuromoji]  
> > at
> 
> org.elasticsearch.index.analysis.AnalysisModule.configure(AnalysisModule.java:308)
> 
> > at
> 
> org.elasticsearch.common.inject.AbstractModule.configure(AbstractModule.java:60)
> 
> > at
> 
> org.elasticsearch.common.inject.spi.Elements$RecordingBinder.install(Elements.java:201)
> 
> > at
> 
> org.elasticsearch.common.inject.spi.Elements.getElements(Elements.java:82)
> 
> > at
> 
> org.elasticsearch.common.inject.InjectorShell$Builder.build(InjectorShell.java:130)
> 
> > at
> 
> org.elasticsearch.common.inject.InjectorBuilder.build(InjectorBuilder.java:99)
> 
> > at
> 
> org.elasticsearch.common.inject.InjectorImpl.createChildInjector(InjectorImpl.java:129)
> 
> > at
> 
> org.elasticsearch.common.inject.ModulesBuilder.createChildInjector(ModulesBuilder.java:66)
> 
> > at
> 
> org.elasticsearch.indices.InternalIndicesService.createIndex(InternalIndicesService.java:287)
> 
> > ... 5 more  
> > Caused by: org.elasticsearch.common.settings.NoClassSettingsException:  
> > Failed to load class setting [type] with value [kuromoji\_tokenizer]  
> > at
> 
> org.elasticsearch.common.settings.ImmutableSettings.getAsClass(ImmutableSettings.java:243)
> 
> > at
> 
> org.elasticsearch.index.analysis.AnalysisModule.configure(AnalysisModule.java:298)
> 
> > ... 13 more  
> > Caused by: java.lang.ClassNotFoundException: kuromoji\_tokenizer  
> > at java.net.URLClassLoader$1.run(URLClassLoader.java:202)  
> > at java.security.AccessController.doPrivileged(Native Method)  
> > at java.net.URLClassLoader.findClass(URLClassLoader.java:190)  
> > at java.lang.ClassLoader.loadClass(ClassLoader.java:306)  
> > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)  
> > at java.lang.ClassLoader.loadClass(ClassLoader.java:247)  
> > at
> 
> org.elasticsearch.common.settings.ImmutableSettings.getAsClass(ImmutableSettings.java:227)
> 
> > ... 14 more
> > 
> > then I use only kuromoji analyzer, creating index and mapping is  
> > success,  
> > can index documents.
> > 
> > curl -XPUT '[http://localhost:9200/wiki/](http://localhost:9200/wiki/)'  
> > curl -XPUT '[http://localhost:9200/wiki/page/\_mapping](http://localhost:9200/wiki/page/_mapping)' -d '  
> > {  
> > "page" : {  
> > "properties" : {  
> > "title" : { "type" : "string", "index" : "analyzed",  
> > "analyzer":"kuromoji", "store" : "yes"},  
> > "text" : { "type" : "string", "index" : "analyzed",  
> > "analyzer":"kuromoji", "store" : "yes"}  
> > }  
> > }  
> > }  
> > '
> > 
> > I don't know why kuromoji\_tokenizer occur ClassNotFound Exception, but  
> > even  
> > then kuromoji analyzer can use.  
> > Is there anything wrong steps for using kuromoji\_tokenizer ?
> > 
> > Thank you,  
> > hirotakaster
> > 
> > --
> 
> --  
> Met vriendelijke groet,
> 
> Martijn van Groningen

--

---

<div class="post-metadata">

**Author:** ![mvg](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mvg/32/98890_2.png) [@mvg](https://discuss.elastic.co/u/mvg)\
**Post date:** [November 21, 2012, 10:51am UTC](https://discuss.elastic.co/t/classnotfoundexception-kuromoji-tokenizer/9693/4 "2012-11-21T10:51:23Z")

</div>

Hi Hirotakaster,

I've released the 1.1.0 version of the kuromoji analysis plugin.

Martijn

On 13 November 2012 15:49, hirotakaster [hirotakaster@gmail.com](mailto:hirotakaster@gmail.com) wrote:

> Hi Martijn,
> 
> Thanks for your advice!!  
> I known this github but I think that version is 1.0.0, so I didn't know why  
> kuromoji\_tokenizer included.  
> I will try to build this with your advice.
> 
> Thank you sincerely,  
> hirotakater
> 
> 2012年11月13日火曜日 22時31分42秒 UTC+9 Martijn v Groningen:
> 
> > Hi Hirotakaster,
> > 
> > The tokenizer 'kuromoji\_tokenizer' isn't available in version 1.0.0,  
> > so that is the reason why kuromoji\_tokenizer can't be found.  
> > Also I noticed that you had a whitespace before the tokenizer name:  
> > "type" : " kuromoji\_tokenizer"  
> > This also results in the tokenizer not being found.
> > 
> > I'll make a 1.1.0 release soon.
> > 
> > If you're impatient you can always try to build the project yourself  
> > by cloning the project  
> > ([GitHub - elastic/elasticsearch-analysis-kuromoji: Japanese (kuromoji) Analysis Plugin](https://github.com/elasticsearch/elasticsearch-analysis-kuromoji/))  
> > and run: 'mvn clean package'
> > 
> > After this replace the 1.0.0 plugin jar file in the plugins directory  
> > with the jar file that you've build with Maven.
> > 
> > Martijn
> > 
> > On 13 November 2012 11:52, hirotakaster [hirota...@gmail.com](mailto:hirota...@gmail.com) wrote:
> > 
> > > Hi guys,
> > > 
> > > I try to use Japanese(Kuromoji)Analysis plugin, but can't use  
> > > kuromoji\_tokenizer by ClassNotFoundException.  
> > > here is comman line.
> > > 
> > > wget
> > > 
> > > [https://github.com/downloads/elasticsearch/elasticsearch/elasticsearch-0.19.11.tar.gz](https://github.com/downloads/elasticsearch/elasticsearch/elasticsearch-0.19.11.tar.gz)  
> > > .  
> > > tar -zxvf elasticsearch-0.19.11.tar.gz  
> > > cd elasticsearch-0.19.11  
> > > bin/plugin -install elasticsearch/elasticsearch-analysis-kuromoji/1.0.0  
> > > bin/elasticsearch  
> > > curl -XPUT '[http://localhost:9200/wiki/](http://localhost:9200/wiki/)' -d'  
> > > {  
> > > "index" : {  
> > > "analysis" : {  
> > > "tokenizer" : {  
> > > "kuromoji" : {  
> > > "type" : " kuromoji\_tokenizer"  
> > > }  
> > > }  
> > > }  
> > > }  
> > > }  
> > > '  
> > > "error":"IndexCreationException[[wiki] failed to create index]; nested:  
> > > ElasticSearchIllegalArgumentException[failed to find tokenizer type [  
> > > kuromoji\_tokenizer] for [kuromoji]]; nested:  
> > > NoClassSettingsException[Failed  
> > > to load class setting [type] with value [kuromoji\_tokenizer]]; nested:  
> > > ClassNotFoundException[kuromoji\_tokenizer]; ","status":500}
> > > 
> > > And following is elasticsearch.log.
> > > 
> > > org.elasticsearch.indices.IndexCreationException: [wiki] failed to  
> > > create  
> > > index  
> > > at
> > > 
> > > org.elasticsearch.indices.InternalIndicesService.createIndex(InternalIndicesService.java:289)  
> > > at
> > > 
> > > org.elasticsearch.cluster.metadata.MetaDataCreateIndexService$1.execute(MetaDataCreateIndexService.java:241)  
> > > at
> > > 
> > > org.elasticsearch.cluster.service.InternalClusterService$2.run(InternalClusterService.java:208)  
> > > at
> > > 
> > > java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)  
> > > at
> > > 
> > > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)  
> > > at java.lang.Thread.run(Thread.java:662)  
> > > Caused by: org.elasticsearch.ElasticSearchIllegalArgumentException:  
> > > failed  
> > > to find tokenizer type [kuromoji\_tokenizer] for [kuromoji]  
> > > at
> > > 
> > > org.elasticsearch.index.analysis.AnalysisModule.configure(AnalysisModule.java:308)  
> > > at
> > > 
> > > org.elasticsearch.common.inject.AbstractModule.configure(AbstractModule.java:60)  
> > > at
> > > 
> > > org.elasticsearch.common.inject.spi.Elements$RecordingBinder.install(Elements.java:201)  
> > > at
> > > 
> > > org.elasticsearch.common.inject.spi.Elements.getElements(Elements.java:82)  
> > > at
> > > 
> > > org.elasticsearch.common.inject.InjectorShell$Builder.build(InjectorShell.java:130)  
> > > at
> > > 
> > > org.elasticsearch.common.inject.InjectorBuilder.build(InjectorBuilder.java:99)  
> > > at
> > > 
> > > org.elasticsearch.common.inject.InjectorImpl.createChildInjector(InjectorImpl.java:129)  
> > > at
> > > 
> > > org.elasticsearch.common.inject.ModulesBuilder.createChildInjector(ModulesBuilder.java:66)  
> > > at
> > > 
> > > org.elasticsearch.indices.InternalIndicesService.createIndex(InternalIndicesService.java:287)  
> > > ... 5 more  
> > > Caused by: org.elasticsearch.common.settings.NoClassSettingsException:  
> > > Failed to load class setting [type] with value [kuromoji\_tokenizer]  
> > > at
> > > 
> > > org.elasticsearch.common.settings.ImmutableSettings.getAsClass(ImmutableSettings.java:243)  
> > > at
> > > 
> > > org.elasticsearch.index.analysis.AnalysisModule.configure(AnalysisModule.java:298)  
> > > ... 13 more  
> > > Caused by: java.lang.ClassNotFoundException: kuromoji\_tokenizer  
> > > at java.net.URLClassLoader$1.run(URLClassLoader.java:202)  
> > > at java.security.AccessController.doPrivileged(Native Method)  
> > > at java.net.URLClassLoader.findClass(URLClassLoader.java:190)  
> > > at java.lang.ClassLoader.loadClass(ClassLoader.java:306)  
> > > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)  
> > > at java.lang.ClassLoader.loadClass(ClassLoader.java:247)  
> > > at
> > > 
> > > org.elasticsearch.common.settings.ImmutableSettings.getAsClass(ImmutableSettings.java:227)  
> > > ... 14 more
> > > 
> > > then I use only kuromoji analyzer, creating index and mapping is  
> > > success,  
> > > can index documents.
> > > 
> > > curl -XPUT '[http://localhost:9200/wiki/](http://localhost:9200/wiki/)'  
> > > curl -XPUT '[http://localhost:9200/wiki/page/\_mapping](http://localhost:9200/wiki/page/_mapping)' -d '  
> > > {  
> > > "page" : {  
> > > "properties" : {  
> > > "title" : { "type" : "string", "index" : "analyzed",  
> > > "analyzer":"kuromoji", "store" : "yes"},  
> > > "text" : { "type" : "string", "index" : "analyzed",  
> > > "analyzer":"kuromoji", "store" : "yes"}  
> > > }  
> > > }  
> > > }  
> > > '
> > > 
> > > I don't know why kuromoji\_tokenizer occur ClassNotFound Exception, but  
> > > even  
> > > then kuromoji analyzer can use.  
> > > Is there anything wrong steps for using kuromoji\_tokenizer ?
> > > 
> > > Thank you,  
> > > hirotakaster
> > > 
> > > --
> > 
> > --  
> > Met vriendelijke groet,
> > 
> > Martijn van Groningen
> 
> --

--  
Met vriendelijke groet,

Martijn van Groningen

--

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<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 6, 2017, 3:03am UTC](https://discuss.elastic.co/t/classnotfoundexception-kuromoji-tokenizer/9693/5 "2017-07-06T03:03:24Z")

</div>