[jira] [Resolved] (SOLR-8295) collapse parser can trigger NPE when a segment has empty DocValues for collapse field (ie: no doc in segment has a value)

["Hoss Man (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-8295?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hoss Man resolved SOLR-8295.
----------------------------
       Resolution: Fixed
    Fix Version/s: Trunk
                   5.4

> collapse parser can trigger NPE when a segment has empty DocValues for collapse field (ie: no doc in segment has a value)
> -------------------------------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-8295
>                 URL: https://issues.apache.org/jira/browse/SOLR-8295
>             Project: Solr
>          Issue Type: Bug
>            Reporter: Steve Rowe
>            Assignee: Hoss Man
>             Fix For: 5.4, Trunk
>
>         Attachments: SOLR-8295.patch
>
>
> When collapsing on a field that doesn't exist for all documents, the existence of a segment that does not contain any documents that have a value can cause an NPE as the collapse parser assumes the DocValues for a segment will always be non-null.



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