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https://issues.apache.org/jira/browse/SOLR-1632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13842077#comment-13842077
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Mark Miller commented on SOLR-1632:
-----------------------------------
I've got two main concerns - the thread local and it looks like the statscache
is not thread safe but shared across threads.
The threadlocal is concerning because you can have thousands of threads and
each will cache how many stats? I wish we could do something better.
> 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: Mark Miller
> Fix For: 5.0, 4.7
>
> 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, 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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