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https://issues.apache.org/jira/browse/SOLR-2092?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yonik Seeley updated SOLR-2092:
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Attachment: SOLR-2092.patch
Here's a draft patch with only UnInvertedField converted from using
BoundedTreeSet to LongPriorityQueue so far. I haven't performance tested this
yet, but I imagine ord->term lookup will remain the dominant cost of large
facet.limit objects. Still, this should help cut down the maximum memory
footprint too.
I also managed to reuse the internal array from the priority queue (so now both
arrays used to sort term ords are reused from previously allocated arrays).
> Use a native priority queue to order facet results
> --------------------------------------------------
>
> Key: SOLR-2092
> URL: https://issues.apache.org/jira/browse/SOLR-2092
> Project: Solr
> Issue Type: Improvement
> Reporter: Yonik Seeley
> Attachments: SOLR-2092.patch
>
>
> Deep paging into facets can be improved via use of a native priority queue.
> Comparisons will be faster, and there will be less GC.
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