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https://issues.apache.org/jira/browse/SOLR-6759?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Simon Endele updated SOLR-6759:
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Attachment: ExpandComponent.java.patch
I'm not a Solr expert, but if I understand the code right, this can be fixed
with a few lines.
Added a patch. Seems to work for us.
> ExpandComponent does not call finish() on DelegatingCollectors
> --------------------------------------------------------------
>
> Key: SOLR-6759
> URL: https://issues.apache.org/jira/browse/SOLR-6759
> Project: Solr
> Issue Type: Bug
> Reporter: Simon Endele
> Attachments: ExpandComponent.java.patch
>
>
> We have a PostFilter for ACL filtering in action that has a similar structure
> as CollapsingQParserPlugin, i.e. it's DelegatingCollector gathers all
> documents and calls delegate.collect() for all docs finally in its finish()
> method.
> In contrast to CollapsingQParserPlugin our PostFilter is also called by the
> ExpandComponent (for purpose).
> But as the finish method is never called by the ExpandComponent, the "expand"
> section in the result is always empty.
> Tested with Solr 4.10.2.
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