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https://issues.apache.org/jira/browse/SOLR-1308?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12785435#action_12785435
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Yonik Seeley commented on SOLR-1308:
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bq. we'll need to merge facet results from UIF per reader
Yeah... that's a pain.
We could easily do per-segment faceting for non-string types though (int, long,
etc) since they don't need to be merged.
> Cache docsets and docs at the SegmentReader level
> -------------------------------------------------
>
> Key: SOLR-1308
> URL: https://issues.apache.org/jira/browse/SOLR-1308
> Project: Solr
> Issue Type: Improvement
> Affects Versions: 1.4
> Reporter: Jason Rutherglen
> Priority: Minor
> Fix For: 1.5
>
> Original Estimate: 504h
> Remaining Estimate: 504h
>
> Solr caches docsets and documents at the top level Multi*Reader
> level. After a commit, the caches are flushed. Reloading the
> caches in near realtime (i.e. commits every 1s - 2min)
> unnecessarily consumes IO resources, especially for largish
> indexes.
> We can cache docsets and documents at the SegmentReader level.
> The cache settings in SolrConfig can be applied to the
> individual SR caches.
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