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https://issues.apache.org/jira/browse/SOLR-9368?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15403886#comment-15403886
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Jan Høydahl commented on SOLR-9368:
-----------------------------------
FileDictionary.java does not mention the support for comment lines and does not
implement it either. So the easiest is to treat this as a documentation bug in
the RefGuide:
https://cwiki.apache.org/confluence/display/solr/Suggester#Suggester-FileDictionaryFactory
and change that.
If not, this should be changed into a LUCENE issue for code changes, but then
it must be a feature request and not a Bug, since the Lucene documentation
(Javadoc) is fully in line with the code...
> FileDictionaryFactory does not treat lines beginning with '#' as comments
> -------------------------------------------------------------------------
>
> Key: SOLR-9368
> URL: https://issues.apache.org/jira/browse/SOLR-9368
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: Suggester
> Affects Versions: 6.1
> Reporter: John Iacona
> Priority: Minor
>
> The documentation for FileDictionaryFactory states that "Blank lines and
> lines that start with a '#' are ignored". This is not the case. When loading
> a dictionary file with '#' prefixed lines, they just get interpreted as terms
> and show up in suggestion results.
> This causes additional confusion when trying to use payloads. As stated in
> https://lucene.apache.org/core/6_1_0/suggest/org/apache/lucene/search/suggest/FileDictionary.html
> : "In order to have payload enabled, the first entry has to have a payload".
> However, if you happen to have a "comment" as the first line in a dictionary
> file (that doesn't happen to have two instances of the fieldDelimiter in
> it...), payloads are disabled.
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