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https://issues.apache.org/jira/browse/SOLR-5302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14053663#comment-14053663
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Joel Bernstein commented on SOLR-5302:
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Steven,
Erick is talking about the AnalyticsQuery API in Solr 4.9.
(http://heliosearch.org/solrs-new-analyticsquery-api/), which is a plugin point
for custom analytics. It's design allows developers to plugin custom analytic
Collectors inline with the flow of the search.
Porting all the functions from the AnalyticsComponent to be AnalyticsQuery's
and then adding distributed support (where possible) would take some serious
thought and effort.
For a near term solution, that makes all the functions available, I think the
best option is the contrib approach.
> Analytics Component
> -------------------
>
> Key: SOLR-5302
> URL: https://issues.apache.org/jira/browse/SOLR-5302
> Project: Solr
> Issue Type: New Feature
> Reporter: Steven Bower
> Assignee: Erick Erickson
> Fix For: 5.0
>
> Attachments: SOLR-5302.patch, SOLR-5302.patch, SOLR-5302.patch,
> SOLR-5302.patch, Search Analytics Component.pdf, Statistical Expressions.pdf,
> solr_analytics-2013.10.04-2.patch
>
>
> This ticket is to track a "replacement" for the StatsComponent. The
> AnalyticsComponent supports the following features:
> * All functionality of StatsComponent (SOLR-4499)
> * Field Faceting (SOLR-3435)
> ** Support for limit
> ** Sorting (bucket name or any stat in the bucket
> ** Support for offset
> * Range Faceting
> ** Supports all options of standard range faceting
> * Query Faceting (SOLR-2925)
> * Ability to use overall/field facet statistics as input to range/query
> faceting (ie calc min/max date and then facet over that range
> * Support for more complex aggregate/mapping operations (SOLR-1622)
> ** Aggregations: min, max, sum, sum-of-square, count, missing, stddev, mean,
> median, percentiles
> ** Operations: negation, abs, add, multiply, divide, power, log, date math,
> string reversal, string concat
> ** Easily pluggable framework to add additional operations
> * New / cleaner output format
> Outstanding Issues:
> * Multi-value field support for stats (supported for faceting)
> * Multi-shard support (may not be possible for some operations, eg median)
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