[
https://issues.apache.org/jira/browse/SOLR-5045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13719614#comment-13719614
]
Joel Bernstein commented on SOLR-5045:
--------------------------------------
Yeah, the plan eventually would be to port the techniques used in SOLR-2894 to
a pluggable Aggregator. Ideally pluggable analytics would lead to the
implementation of different aggregation libraries. Since they can be
implemented as pure plugins, developers wouldn't have to worry about getting
their library committed. Interesting commercial opportunity for developing and
maintaining a high performance analytic library for Solr, above and beyond what
the community provides.
> Pluggable Analytics
> -------------------
>
> Key: SOLR-5045
> URL: https://issues.apache.org/jira/browse/SOLR-5045
> Project: Solr
> Issue Type: New Feature
> Components: search
> Affects Versions: 5.0
> Reporter: Joel Bernstein
> Priority: Minor
> Fix For: 5.0
>
> Attachments: SOLR-5045.patch, SOLR-5045.patch
>
>
> This ticket provides a pluggable aggregation framework through the
> introduction of a new *Aggregator* interface and a new search component
> called the *AggregatorComponent*.
> The *Aggregator* interface extends the PostFilter interface providing methods
> that allow DelegatingCollectors to perform aggregation at collect time.
> Aggregators were designed to play nicely with the CollapsingQParserPlugin
> introduced in SOLR-5027.
> The *AggregatorComponent* manages the output and distributed merging of
> aggregate results.
> This ticket is an alternate design to SOLR-4465 which had the same basic idea
> but a very different implementation. This implementation resolves the caching
> issues in SOLR-4465 and combined with SOLR-5027 plays nicely with field
> collapsing. It is also much less intrusive on the core code as it's entirely
> implemented with plugins.
> Initial Syntax for the sample SumQParserPlugin Aggregator:
> ../select?q=\*:\*&wt=xml&indent=true&fq=\{!sum field=popularity
> id=mysum\}&aggregate=true
> *fq=\{!sum field=popularity id=mysum\}* - Calls the SumQParserPlugin telling
> it to sum the field popularity.
> *aggregate=true* - turns on the AggregatorComponent
> The output contains a block that looks like this:
> {code:xml}
> <lst name="aggregates">
> <lst name="mysum">
> <long name="sum">85</long>
> </lst>
> </lst>
> {code}
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
