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https://issues.apache.org/jira/browse/SOLR-6468?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14130090#comment-14130090
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Alexander S. commented on SOLR-6468:
------------------------------------

Just tried to add matchVersion but got this error:
{code}
null:org.apache.solr.common.SolrException: Unable to create core: crm-prod
        at 
org.apache.solr.core.CoreContainer.recordAndThrow(CoreContainer.java:911)
        at org.apache.solr.core.CoreContainer.create(CoreContainer.java:568)
        at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:261)
        at org.apache.solr.core.CoreContainer$1.call(CoreContainer.java:253)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.solr.common.SolrException: Could not load core 
configuration for core crm-prod
        at 
org.apache.solr.core.ConfigSetService.getConfig(ConfigSetService.java:66)
        at org.apache.solr.core.CoreContainer.create(CoreContainer.java:554)
        ... 8 more
Caused by: org.apache.solr.common.SolrException: Plugin init failure for 
[schema.xml] fieldType "words_ngram": Plugin init failure for [schema.xml] 
analyzer/filter: Error instantiating class: 
'org.apache.lucene.analysis.core.StopFilterFactory'. Schema file is 
/etc/solr/core2/schema.xml
        at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:616)
        at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:166)
        at 
org.apache.solr.schema.IndexSchemaFactory.create(IndexSchemaFactory.java:55)
        at 
org.apache.solr.schema.IndexSchemaFactory.buildIndexSchema(IndexSchemaFactory.java:69)
        at 
org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:89)
        at 
org.apache.solr.core.ConfigSetService.getConfig(ConfigSetService.java:62)
        ... 9 more
Caused by: org.apache.solr.common.SolrException: Plugin init failure for 
[schema.xml] fieldType "words_ngram": Plugin init failure for [schema.xml] 
analyzer/filter: Error instantiating class: 
'org.apache.lucene.analysis.core.StopFilterFactory'
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:177)
        at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:470)
        ... 14 more
Caused by: org.apache.solr.common.SolrException: Plugin init failure for 
[schema.xml] analyzer/filter: Error instantiating class: 
'org.apache.lucene.analysis.core.StopFilterFactory'
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:177)
        at 
org.apache.solr.schema.FieldTypePluginLoader.readAnalyzer(FieldTypePluginLoader.java:400)
        at 
org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:86)
        at 
org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:43)
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:151)
        ... 15 more
Caused by: org.apache.solr.common.SolrException: Error instantiating class: 
'org.apache.lucene.analysis.core.StopFilterFactory'
        at 
org.apache.solr.core.SolrResourceLoader.newInstance(SolrResourceLoader.java:606)
        at 
org.apache.solr.schema.FieldTypePluginLoader$3.create(FieldTypePluginLoader.java:382)
        at 
org.apache.solr.schema.FieldTypePluginLoader$3.create(FieldTypePluginLoader.java:376)
        at 
org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:151)
        ... 19 more
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at 
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at 
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
        at 
org.apache.solr.core.SolrResourceLoader.newInstance(SolrResourceLoader.java:603)
        ... 22 more
Caused by: java.lang.IllegalArgumentException: Unknown parameters: 
{matchVersion=4.3}
        at 
org.apache.lucene.analysis.core.StopFilterFactory.<init>(StopFilterFactory.java:91)
        ... 27 more
{code}

> Regression: StopFilterFactory doesn't work properly without 
> enablePositionIncrements="false"
> --------------------------------------------------------------------------------------------
>
>                 Key: SOLR-6468
>                 URL: https://issues.apache.org/jira/browse/SOLR-6468
>             Project: Solr
>          Issue Type: Bug
>    Affects Versions: 4.8.1, 4.9
>            Reporter: Alexander S.
>
> Setup:
> * Schema version is 1.5
> * Field config:
> {code}
> <fieldType name="words_ngram" class="solr.TextField" omitNorms="false" 
> autoGeneratePhraseQueries="true">
>   <analyzer>
>     <tokenizer class="solr.PatternTokenizerFactory" pattern="[^\w]+" />
>     <filter class="solr.StopFilterFactory" words="url_stopwords.txt" 
> ignoreCase="true" />
>     <filter class="solr.LowerCaseFilterFactory" />
>   </analyzer>
> </fieldType>
> {code}
> * Stop words:
> {code}
> http 
> https 
> ftp 
> www
> {code}
> So very simple. In the index I have:
> * twitter.com/testuser
> All these queries do match:
> * twitter.com/testuser
> * com/testuser
> * testuser
> But none of these does:
> * https://twitter.com/testuser
> * https://www.twitter.com/testuser
> * www.twitter.com/testuser
> Debug output shows:
> "parsedquery_toString": "+(url_words_ngram:\"? twitter com testuser\")"
> But we need:
> "parsedquery_toString": "+(url_words_ngram:\"twitter com testuser\")"
> Complete debug outputs:
> * a valid search: 
> http://pastie.org/pastes/9500661/text?key=rgqj5ivlgsbk1jxsudx9za
> * an invalid search: 
> http://pastie.org/pastes/9500662/text?key=b4zlh2oaxtikd8jvo5xaww
> The complete discussion and explanation of the problem is here: 
> http://lucene.472066.n3.nabble.com/Help-with-StopFilterFactory-td4153839.html
> I didn't find a clear explanation how can we upgrade Solr, there's no any 
> replacement or a workarround to this, so this is not just a major change but 
> a major disrespect to all existing Solr users who are using this feature.



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