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https://issues.apache.org/jira/browse/SOLR-7918?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yonik Seeley updated SOLR-7918:
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Attachment: SOLR-7918.patch
Patch attached.. This also introduces a DocSetProducer interface (ported from
Heliosearch) to form a basis for future optimizations.
The actual set building was moved out to DocSetUtil from SolrIndexSearcher to
avoid bloating that class more.
Performance improvements were quite good. On the low end was large SortedInt
sets (only a 20% improvement), but large sets saw a 70% improvement and very
small sets saw over 120% improvement. Complete request+response was measured
from the client, so the speedups were actually even greater.
> speed up term->DocSet production
> --------------------------------
>
> Key: SOLR-7918
> URL: https://issues.apache.org/jira/browse/SOLR-7918
> Project: Solr
> Issue Type: Improvement
> Reporter: Yonik Seeley
> Attachments: SOLR-7918.patch
>
>
> We can use index statistics to figure out before hand what type of doc set
> (sorted int or bitset) we should create. This should use less memory than
> the current approach as well as increase performance.
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