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https://issues.apache.org/jira/browse/SOLR-9701?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Erick Erickson updated SOLR-9701:
---------------------------------
    Attachment: SOLR-9701.patch

Preliminary patch, still to run full test suite.

> NPE in export handler when "fl" parameter is omitted.
> -----------------------------------------------------
>
>                 Key: SOLR-9701
>                 URL: https://issues.apache.org/jira/browse/SOLR-9701
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>    Affects Versions: trunk, 6.4
>            Reporter: Erick Erickson
>            Assignee: Erick Erickson
>            Priority: Minor
>         Attachments: SOLR-9701.patch
>
>
> This started when a user reported that if you do not specify any parameters 
> for the export handler, you get an NPE. I tracked it down to not specifying 
> an "fl" parameter.
> But in general I rearranged the error reporting in 
> SortingResponseWriter.write so that immediately upon detecting a problem, the 
> exception gets written to the output stream and then return immediately 
> rather than save it up for the end. Preliminary version of the patch 
> attached; it fixes the immediate problem.
> Still to see is if it breaks any tests since the first error detected will be 
> returned to the user rather than the last. I'll fix any tests that are 
> sensitive to this and check in sometime this weekend.



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