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https://issues.apache.org/jira/browse/LUCENE-4258?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13453739#comment-13453739
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Shai Erera commented on LUCENE-4258:
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We will take care of DocValues too, eventually. I think this can be handled in
a separate issue though.
bq. and would already solve most use-cases
I have a problem with that statement. Robert thinks that the most common use
cases are to replace a field's content entirely. In our world (Sivan and
mine's), updating a field's terms (removing / adding single terms) is the most
common use case. And perhaps in your world updating DocValues for scoring
purposes is the most common use case.
Therefore I don't think that there is one common use case, and therefore IMO we
shouldn't aim at solving one first. Personally, DocValues are relatively new
(compared to posting lists and payloads) and therefore I believe that being
able to update them should come second (just because I estimate they are not as
widely used as the others). But that's just my opinion -- obviously one that
relies solely on DocValues would state otherwise :).
The design currently doesn't cover DocValues at all. I think, in order to keep
this issue focused, we should handle that in a separate issue after we land
updateable fields.
bq. On slide 4 one of the enumerated operations is field deletion but I am not
sure how to do it with the proposed API on slide 5?
Good point. Well, you could say that replaceField("f", "value") called as
replaceField("f", null) would mean "delete 'f'". That should work, but perhaps
we can come up with something more explicit.
> Incremental Field Updates through Stacked Segments
> --------------------------------------------------
>
> Key: LUCENE-4258
> URL: https://issues.apache.org/jira/browse/LUCENE-4258
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/index
> Reporter: Sivan Yogev
> Attachments: IncrementalFieldUpdates.odp,
> LUCENE-4258-API-changes.patch, LUCENE-4258-inner-changes.patch
>
> Original Estimate: 2,520h
> Remaining Estimate: 2,520h
>
> Shai and I would like to start working on the proposal to Incremental Field
> Updates outlined here (http://markmail.org/message/zhrdxxpfk6qvdaex).
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