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https://issues.apache.org/jira/browse/LUCENE-5189?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13752462#comment-13752462
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Robert Muir commented on LUCENE-5189:
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I think its true we can tackle this in a separate issue: but I think i'd rather
have SR/SCR just pass the correct directory always in the
segmentreadstate/segmentwritestate to the different codec components (e.g.
segmentreadstate.dir is always the 'correct' directory the codec component
should use, and even when CFS is enabled, livedocsformat always gets the inner
one and so on).
Its ok if we want to have the 'inner dir' accessible in SegmentInfo for SR/SCR
to do this: like we could make it package private and everything would then
just work?
This would greatly reduce the possibility of mistakes. I think having CFS fall
back on its inner directory on FileNotFoundException is less desirable.
> Numeric DocValues Updates
> -------------------------
>
> Key: LUCENE-5189
> URL: https://issues.apache.org/jira/browse/LUCENE-5189
> Project: Lucene - Core
> Issue Type: New Feature
> Components: core/index
> Reporter: Shai Erera
> Assignee: Shai Erera
> Attachments: LUCENE-5189.patch, LUCENE-5189.patch
>
>
> In LUCENE-4258 we started to work on incremental field updates, however the
> amount of changes are immense and hard to follow/consume. The reason is that
> we targeted postings, stored fields, DV etc., all from the get go.
> I'd like to start afresh here, with numeric-dv-field updates only. There are
> a couple of reasons to that:
> * NumericDV fields should be easier to update, if e.g. we write all the
> values of all the documents in a segment for the updated field (similar to
> how livedocs work, and previously norms).
> * It's a fairly contained issue, attempting to handle just one data type to
> update, yet requires many changes to core code which will also be useful for
> updating other data types.
> * It has value in and on itself, and we don't need to allow updating all the
> data types in Lucene at once ... we can do that gradually.
> I have some working patch already which I'll upload next, explaining the
> changes.
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