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https://issues.apache.org/jira/browse/SOLR-2894?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13912660#comment-13912660
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Elran Dvir commented on SOLR-2894:
----------------------------------
By the way, when I profiled our very slow distributed pivot, I noticed most of
the time is wasted in val.get(i) in
trimExcessValuesBasedUponFacetLimitAndOffset in PivotFacetHelper.java.
The following change (in the first two lines of the function) has shown a
significant improvement:
List<NamedList<Object>> newVal = new LinkedList<NamedList<Object>>();
if (val == null) return val;
to:
if (val == null) return val;
List<NamedList<Object>> newVal = new ArrayList<NamedList<Object>>(val.size());
Thanks.
> Implement distributed pivot faceting
> ------------------------------------
>
> Key: SOLR-2894
> URL: https://issues.apache.org/jira/browse/SOLR-2894
> Project: Solr
> Issue Type: Improvement
> Reporter: Erik Hatcher
> Fix For: 4.7
>
> Attachments: SOLR-2894-reworked.patch, SOLR-2894.patch,
> SOLR-2894.patch, SOLR-2894.patch, SOLR-2894.patch, SOLR-2894.patch,
> SOLR-2894.patch, SOLR-2894.patch, SOLR-2894.patch, SOLR-2894.patch,
> SOLR-2894.patch, SOLR-2894.patch, SOLR-2894.patch, SOLR-2894.patch,
> SOLR-2894.patch, SOLR-2894.patch, SOLR-2894.patch
>
>
> Following up on SOLR-792, pivot faceting currently only supports
> undistributed mode. Distributed pivot faceting needs to be implemented.
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