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From "Greg Harris (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-5480) Make MoreLikeThisHandler distributable
Date Wed, 12 Mar 2014 21:22:47 GMT

    [ https://issues.apache.org/jira/browse/SOLR-5480?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13932402#comment-13932402
] 

Greg Harris commented on SOLR-5480:
-----------------------------------

I tried to use this patch with mlt.fq. Essentially I'm having trouble with using an integer
as the parameter, String seems to work. It's parsing junk as the value of the filter query
as an int. I don't know exactly what needs to be fixed, but it has to do with using the toString()
method on the TermQuery object as part of the fq. 

Basically at line 584 in SingleMoreLikeThisComponent:
String[] mltFilters = new String[rb._mltFilters.size()];
      for (int i = 0; i < mltFilters.length; i++) {
        mltFilters[i] = rb._mltFilters.get(i).toString();
      }

the toString() eventually calls TermQuery.toString(String field). Since this is a bytesRef
it seems that TermQuery.text() called in the toString() doesn't return what should be an int
value and instead returns junk. Then the filter fails. 

> Make MoreLikeThisHandler distributable
> --------------------------------------
>
>                 Key: SOLR-5480
>                 URL: https://issues.apache.org/jira/browse/SOLR-5480
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Steve Molloy
>         Attachments: SOLR-5480.patch, SOLR-5480.patch, SOLR-5480.patch, SOLR-5480.patch,
SOLR-5480.patch, SOLR-5480.patch
>
>
> The MoreLikeThis component, when used in the standard search handler supports distributed
searches. But the MoreLikeThisHandler itself doesn't, which prevents from say, passing in
text to perform the query. I'll start looking into adapting the SearchHandler logic to the
MoreLikeThisHandler. If anyone has some work done already and want to share, or want to contribute,
any help will be welcomed. 



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