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https://issues.apache.org/jira/browse/LUCENE-4591?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13511381#comment-13511381
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Robert Muir commented on LUCENE-4591:
-------------------------------------
I don't think we should implement an SPI unless its really necessary (I've said
this before, SPI is heavy-duty stuff and shouldn't be done on a whim).
As Adrien describes, StoredFieldsFormat does not really make sense per-field.
I don't think we can/should use SegmentWriteState: since IndexWriter streams
stored fields directly to the codec, some parameters like FieldInfos are not
available at the time this writer is initialized.
But I think all components should get and respect segment suffixes!
> Make StoredFieldsFormat more configurable
> -----------------------------------------
>
> Key: LUCENE-4591
> URL: https://issues.apache.org/jira/browse/LUCENE-4591
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/codecs
> Affects Versions: 4.1
> Reporter: Renaud Delbru
> Fix For: 4.1
>
>
> The current StoredFieldsFormat are implemented with the assumption that only
> one type of StoredfieldsFormat is used by the index.
> We would like to be able to configure a StoredFieldsFormat per field,
> similarly to the PostingsFormat.
> There is a few issues that need to be solved for allowing that:
> 1) allowing to configure a segment suffix to the StoredFieldsFormat
> 2) implement SPI interface in StoredFieldsFormat
> 3) create a PerFieldStoredFieldsFormat
> We are proposing to start first with 1) by modifying the signature of
> StoredFieldsFormat#fieldsReader and StoredFieldsFormat#fieldsWriter so that
> they use SegmentReadState and SegmentWriteState instead of the current set of
> parameters.
> Let us know what you think about this idea. If this is of interest, we can
> contribute with a first path for 1).
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