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https://issues.apache.org/jira/browse/LUCENE-5894?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir updated LUCENE-5894:
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Attachment: LUCENE-5894.patch
Stab at a patch:
* moved all bulk merge stuff out of segmentmerger to codec private
* moved all merge logic out of segment merger into codec apis (so they can
completely override)
* added missing getXXXReader to SegmentReader, its not needed for postings as
we already have direct access with fields(), but is needed for norms/docvalues
* separated norms processing from docvalues
* refactored dv update handling: when dv updates are in place you get a
producer that delegates to the correct ones (this is a nice separation out of
SR)
> refactor bulk merge logic
> -------------------------
>
> Key: LUCENE-5894
> URL: https://issues.apache.org/jira/browse/LUCENE-5894
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Robert Muir
> Attachments: LUCENE-5894.patch
>
>
> Today its only usable really by stored fields/term vectors, has hardcoded
> logic in SegmentMerger specific to certain impls, etc.
> It would be better if this was generalized to terms/postings/norms/docvalues
> as well.
> Bulk merge is boring, the real idea is to allow codecs to do more: e.g. with
> this patch they could do streaming checksum validation, or prevent the
> loading of "latent" norms, or other things we cannot do today.
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