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Date: Fri, 5 Apr 2013 19:23:16 +0000 (UTC)
From: "Yonik Seeley (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
Message-ID: <JIRA.12546623.1331832549486.118473.1365189796081@arcas>
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References: <JIRA.12546623.1331832549486@arcas>
Subject: [jira] [Commented] (SOLR-3251) dynamically add field to schema
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    [ https://issues.apache.org/jira/browse/SOLR-3251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13623971#comment-13623971 ] 

Yonik Seeley commented on SOLR-3251:
------------------------------------

Steve: one random implementation idea is that we might want to separate schema modification from schema publishing... say if we want to add more than one field or field type atomically, or add a whole bunch of fields in a batch just for performance reasons.

One possible way:
{code}
  Schema newSchema = currSchema.shallowCopy();
  newSchema.add(...)
  newSchema.add(...)
  publishNewSchema(newSchema)
{code}

We really only need the schema to be effectively immutable (i.e. you don't change it after you publish it).  The devil is in the details of course...

                
> dynamically add field to schema
> -------------------------------
>
>                 Key: SOLR-3251
>                 URL: https://issues.apache.org/jira/browse/SOLR-3251
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Yonik Seeley
>            Assignee: Steve Rowe
>         Attachments: SOLR-3251.patch, SOLR-3251.patch, SOLR-3251.patch
>
>
> One related piece of functionality needed for SOLR-3250 is the ability to dynamically add a field to the schema.

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