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https://issues.apache.org/jira/browse/SOLR-6584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14158039#comment-14158039
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Joel Bernstein edited comment on SOLR-6584 at 10/3/14 2:35 PM:
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Patch that ensures that the doclist will never be larger then the number of
docs in the index.
Actually turning off prefetch will involve adding new parameters to Solr. The
dummy doclist will be cached in the document cache after the first run anyway
so the pre-fetch will have very little impact on performance. So I think it can
remain for now.
was (Author: joel.bernstein):
Patch that ensures that doclist will never be larger then the number of docs in
the index.
Actually turning off prefetch will involve adding new parameters to Solr. The
dummy doclist will be cached in the document cache after the first run anyway
so the pre-fetch will have very little impact on performance. So I think it can
remain for now.
> Export handler causes bug in prefetch with very small indexes.
> --------------------------------------------------------------
>
> Key: SOLR-6584
> URL: https://issues.apache.org/jira/browse/SOLR-6584
> Project: Solr
> Issue Type: Bug
> Reporter: Joel Bernstein
> Priority: Minor
> Attachments: SOLR-6584.patch
>
>
> When there are very few documents in the index the ExportQParserPlugin is
> creating a dummy docList which is larger then the number of documents in the
> index. This causes a bug during the prefetch stage of the QueryComponent.
> There really needs to be two fixes here.
> 1) The dummy docList should never be larger then the number of documents in
> the index.
> 2) Prefetch should be turned off during exports as it's not doing anything
> useful.
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