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From "Joel Bernstein (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SOLR-4465) Configurable Collectors
Date Tue, 12 Mar 2013 20:09:13 GMT

     [ https://issues.apache.org/jira/browse/SOLR-4465?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Joel Bernstein updated SOLR-4465:
---------------------------------

    Attachment: SOLR-4465.patch

Added support for delegating collectors.

This design allows for a "topdocs" collector to be wrapped by "delegating" collectors.

The "topdocs" collector collects the doclist and docset. The delegating collectors are designed
to collect aggregate data of some kind.

The delegating collectors have access to the ResponseBuilder and through that can add Maps
directly to the SolrQueryResponse.

Both the topdocs collector and the delegating collectors take part in the merge of distributed
results from shards.

This paves the way for pluggable distributed analytics to be included with searches results.

TODO: I believe Maps that are placed in the SolrQueryResponse are automatically output but
some work needs to be done get them read in the solrj QueryResponse class so they can be merged.
                
> Configurable Collectors
> -----------------------
>
>                 Key: SOLR-4465
>                 URL: https://issues.apache.org/jira/browse/SOLR-4465
>             Project: Solr
>          Issue Type: New Feature
>          Components: search
>    Affects Versions: 4.1
>            Reporter: Joel Bernstein
>             Fix For: 4.3
>
>         Attachments: SOLR-4465.patch, SOLR-4465.patch, SOLR-4465.patch, SOLR-4465.patch,
SOLR-4465.patch, SOLR-4465.patch, SOLR-4465.patch, SOLR-4465.patch, SOLR-4465.patch, SOLR-4465.patch,
SOLR-4465.patch, SOLR-4465.patch
>
>
> This issue is to add configurable custom collectors to Solr. This expands the design
and work done in issue SOLR-1680 to include:
> 1) CollectorFactory configuration in solconfig.xml
> 2) Http parameters to allow clients to dynamically select a CollectorFactory and construct
a custom Collector.
> 3) Make aspects of QueryComponent pluggable so that the output from distributed search
can conform with custom collectors at the shard level.

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