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From "Christine Poerschke (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SOLR-11164) OriginalScoreFeature causes NullPointerException during feature logging with SolrCloud mode.
Date Fri, 25 Aug 2017 14:53:00 GMT

     [ https://issues.apache.org/jira/browse/SOLR-11164?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Christine Poerschke resolved SOLR-11164.
----------------------------------------
       Resolution: Fixed
    Fix Version/s: 7.1
                   master (8.0)

Thanks everyone!

> OriginalScoreFeature causes NullPointerException during feature logging with SolrCloud
mode.
> --------------------------------------------------------------------------------------------
>
>                 Key: SOLR-11164
>                 URL: https://issues.apache.org/jira/browse/SOLR-11164
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: contrib - LTR
>    Affects Versions: 6.6
>            Reporter: Yuki Yano
>            Assignee: Christine Poerschke
>             Fix For: master (8.0), 7.1
>
>         Attachments: SOLR-11164_master.patch, SOLR-11164_master_v2.patch, SOLR-11164.patch,
SOLR-11164.patch, SOLR-11164.patch
>
>
> In FeatureTransfer, OriginalScoreFeature uses original Query instance preserved in LTRScoringQuery
for the evaluation.
> This query is set in RankQuery#wrap during QueryComponent#process.
> With SolrCloud mode, document searches take two steps: finding top-N document ids, and
filling documents of found ids.
> In this case, FeatureTransformer works in the second step and tries to extract features
with LTRScoringQuery built in QueryComponent#prepare.
> However, because the second step doesn't call QueryComponent#process, the original query
of LTRScoringQuery remains null and this causes NullPointerException while evaluating OriginalScoreFeature.
> We can get the original query from ResultContext which is an argument of DocTransformer#setContext,
thus this problem can solve by using it if LTRScoringQuery doesn't have correct original query.



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