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https://issues.apache.org/jira/browse/LUCENE-5189?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shai Erera updated LUCENE-5189:
-------------------------------
Attachment: LUCENE-5189.patch
Fixed NRT support -- DVProducers moved from SegmentCoreReaders to
SegmentReader, where they are being wrapped by RefCount which keeps track of
ref counts (new class I added). When an SR is shared, SR inc-refs the
DVProducers that it uses (according to SIPC.getDVGen(field)) and dec-ref on
doClose().
All Lucene tests pass, including the new numeric DV updates ones. A review
would be appreciated though.
The remaining nocommits are for renames and FieldInfos.gen. I think I'll leave
the renames as TODOs, to handle prior to merging to 4x (after this one bakes in
trunk), that way avoiding potential messy merges. I can handle FieldInfos.gen
either as part of this issue, or a separate one. Preferences?
> 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, LUCENE-5189.patch,
> LUCENE-5189.patch, LUCENE-5189.patch, LUCENE-5189.patch, LUCENE-5189.patch,
> 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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