[jira] [Commented] (SOLR-741) Add support for rounding dates in DateField

["Alexandre Rafalovitch (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-741?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14043126#comment-14043126 ] 

Alexandre Rafalovitch commented on SOLR-741:
--------------------------------------------

Looks like UpdateRequestProcessor is the best answer here. Should be safe to close?

> Add support for rounding dates in DateField
> -------------------------------------------
>
>                 Key: SOLR-741
>                 URL: https://issues.apache.org/jira/browse/SOLR-741
>             Project: Solr
>          Issue Type: Improvement
>          Components: search
>    Affects Versions: 1.4
>            Reporter: Shalin Shekhar Mangar
>            Priority: Minor
>             Fix For: 4.9, 5.0
>
>
> As discussed at http://www.nabble.com/Rounding-date-fields-td19203108.html
> Since rounding dates to a coarse value is an often recommended solution to decrease number of unique terms, we should add support for doing this in DateField itself. A number of syntax were proposed, some of them were:
> # <fieldType name="date" class="solr.DateField" sortMissingLast="true"omitNorms="true" roundTo="-1MINUTE" /> (Shalin)
> # <fieldType name="date" class="solr.DateField" sortMissingLast="true" omitNorms="true" round="DOWN_MINUTE" /> (Otis)
> Hoss proposed more general enhancements related to arbitary pre-processing of values prior to indexing/storing using pre-processing analyzers.
> This issue aims to build a consensus on the solution to pursue and to implement that solution inside Solr.



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