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https://issues.apache.org/jira/browse/SOLR-1632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14256378#comment-14256378
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Mark Miller commented on SOLR-1632:
-----------------------------------
We should get some results across real machines, but I also turned my micro
bench work onto this. I didn't confirm that the settings are actually taking
affect, or review the latest work, but I ran the benchmark twice, once with
LocalStatsCache and once with ExactStatsCache.
bq. <statsCache class="org.apache.solr.search.stats.ExactStatsCache"/>
bq. <statsCache class="org.apache.solr.search.stats.LocalStatsCache"/>
The test uses two machines, one to create and send the docs/queries, another to
run the Solr JVMs. I ran a query test using a ton of wikipedia data across 6
jvm instances, 6 shards, no replication. I indexed a ton of docs, and then used
a bunch of threads and bunch of CloudSolrServer's to pound in some queries.
Performance appeared nearly identical.
> Distributed IDF
> ---------------
>
> Key: SOLR-1632
> URL: https://issues.apache.org/jira/browse/SOLR-1632
> Project: Solr
> Issue Type: New Feature
> Components: search
> Affects Versions: 1.5
> Reporter: Andrzej Bialecki
> Assignee: Anshum Gupta
> Fix For: 5.0, Trunk
>
> Attachments: 3x_SOLR-1632_doesntwork.patch, SOLR-1632.patch,
> SOLR-1632.patch, SOLR-1632.patch, SOLR-1632.patch, SOLR-1632.patch,
> SOLR-1632.patch, SOLR-1632.patch, SOLR-1632.patch, SOLR-1632.patch,
> SOLR-1632.patch, SOLR-1632.patch, SOLR-1632.patch, SOLR-1632.patch,
> SOLR-1632.patch, SOLR-1632.patch, SOLR-1632.patch, distrib-2.patch,
> distrib.patch
>
>
> Distributed IDF is a valuable enhancement for distributed search across
> non-uniform shards. This issue tracks the proposed implementation of an API
> to support this functionality in Solr.
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