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From "Simon Willnauer (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LUCENE-4087) Provide consistent IW behavior for illegal meta data changes
Date Fri, 08 Jun 2012 15:46:23 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-4087?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Simon Willnauer updated LUCENE-4087:
------------------------------------

    Attachment: LUCENE-4087.patch

here is a new patch adding documentation to DocValues.java & a reference to all DV Fields.
I added a bunch of tests including verification test that changing norms types actually fails.
I extended the type promoter a little to actually promote INT_16 & INT_8 to Float32 if
needed as well as INT_32 to FLOAT_64.

I think its ready
                
> Provide consistent IW behavior for illegal meta data changes
> ------------------------------------------------------------
>
>                 Key: LUCENE-4087
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4087
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: core/index
>    Affects Versions: 4.0
>            Reporter: Simon Willnauer
>             Fix For: 4.0, 4.1, 5.0
>
>         Attachments: LUCENE-4087.patch, LUCENE-4087.patch
>
>
> Currently IW fails late and inconsistent if field metadata like an already defined DocValues
type or "un"-omitting norms.
> we can approach this similar to how we handle consistent field number and:
>  
> * throw exception if indexOptions conflict (e.g. omitTF=true versus
> false) instead of silently dropping positions on merge
> * same with omitNorms
> * same with norms types and docvalues types
> * still keeping field numbers consistent
> this way we could eliminate all these traps and just give an
> exception instead.

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