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https://issues.apache.org/jira/browse/LUCENE-2160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12791051#action_12791051
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John Wang commented on LUCENE-2160:
-----------------------------------

Looked at the file format wiki more closely, I see front-coding applies to all 
the terms in all fields. So my above comment would not work.
Do you think it makes sense to have a tii,tis file for each indexed field? 
Would the new codec allow for it?

-John

> Tool to rename a field
> ----------------------
>
>                 Key: LUCENE-2160
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2160
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: contrib/*
>    Affects Versions: 3.0
>            Reporter: John Wang
>         Attachments: RenameField.java, RenameField.java
>
>
> We found it useful to be able to rename a field.
> It can save a lot of reindexing time/cost when being used in conjunction with 
> ParallelReader to update partially a field.

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