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https://issues.apache.org/jira/browse/LUCENE-5240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13776244#comment-13776244
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Uwe Schindler commented on LUCENE-5240:
---------------------------------------

I don't know the problem of TrieTokenizer. To me, this one looks good, but it 
may have a problem with the crazy "hasValue". This boolean seems to be used to 
emulate an empty TokenStream if the input is empty (which NumericTokenStream 
cannot do).

The TrieFields no longer need a Tokenizer in Solr, so we should remove this one 
(it now uses NumericField internally).
                
> additional safety in Tokenizer state machine
> --------------------------------------------
>
>                 Key: LUCENE-5240
>                 URL: https://issues.apache.org/jira/browse/LUCENE-5240
>             Project: Lucene - Core
>          Issue Type: Bug
>            Reporter: Robert Muir
>         Attachments: LUCENE-5240.patch
>
>
> {code}
>    * <b>NOTE:</b> 
>    * The default implementation closes the input Reader, so
>    * be sure to call <code>super.close()</code> when overriding this method.
>    */
>   @Override
>   public void close() throws IOException {
> {code}
> We can add a simple check for this easily now in setReader. I found a few 
> bugs, and fixed all except TrieTokenizer in solr (I am lost here... somewhere 
> i have a patch to remove this thing).

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