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From "Tim Smith (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LUCENE-4560) Support Filtering Segments During Merge
Date Fri, 16 Nov 2012 21:33:12 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-4560?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tim Smith updated LUCENE-4560:
------------------------------

    Lucene Fields: New,Patch Available  (was: New)
    
> Support Filtering Segments During Merge
> ---------------------------------------
>
>                 Key: LUCENE-4560
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4560
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Tim Smith
>         Attachments: LUCENE-4560.patch
>
>
> Spun off from LUCENE-4557
> It is desirable to be able to filter segments during merge.
> Most often, full reindex of content is not possible.
> Merging segments can sometimes have negative consequences when fields are have different
options (most restrictive option is forced during merge)
> Being able to filter segments during merges will allow gradually migrating indexed data
to new index settings, support pruning/enhancing existing data gradually
> Use Cases:
> * Migrate IndexOptions for fields (See LUCENE-4557)
> * Gradually Remove index fields no longer used
> * Migrate indexed sort fields to DocValues
> * Support converting data types for indexed data
> * and so on
> patch will be forthcoming

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