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https://issues.apache.org/jira/browse/SOLR-14476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17125195#comment-17125195
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ASF subversion and git services commented on SOLR-14476:
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Commit 90039fc9bc52b3e648b174ee450f32ca71ae4291 in lucene-solr's branch
refs/heads/master from Joel Bernstein
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=90039fc ]
SOLR-14476: Add percentiles and standard deviation aggregations to stats, facet
and timeseries Streaming Expressions
> Add percentiles and standard deviation aggregations to stats, facet and
> timeseries Streaming Expressions
> --------------------------------------------------------------------------------------------------------
>
> Key: SOLR-14476
> URL: https://issues.apache.org/jira/browse/SOLR-14476
> Project: Solr
> Issue Type: New Feature
> Components: streaming expressions
> Reporter: Joel Bernstein
> Assignee: Joel Bernstein
> Priority: Major
> Attachments: SOLR-14476.patch, SOLR-14476.patch, SOLR-14476.patch,
> SOLR-14476.patch, SOLR-14476.patch, SOLR-14476.patch, SOLR-14476.patch,
> SOLR-14476.patch
>
>
> This ticket will add the *per* (percentile) and *std* (standard deviation)
> aggregations to the *stats*, *facet* and *timeseries* Streaming Expressions.
> Syntax:
>
> {code:java}
> facet(logs, buckets="collection_s", per(qtime_i, 50), std(qtime_i)) {code}
> The stats function will also be reimplemented using JSON facets rather than
> the stats component as part of this ticket. The main reason is that JSON
> facets syntax is easier to work with for percentiles, but it also
> standardized are pushed down aggregations to JSON facets.
> In a separate ticket *per* and *std* aggregations will be added to the
> *rollup*, *hashRollup* and *nodes* Streaming Expressions.
>
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