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From "Sivan Yogev (JIRA)" <>
Subject [jira] [Updated] (LUCENE-4258) Incremental Field Updates through Stacked Segments
Date Thu, 22 Nov 2012 13:02:58 GMT


Sivan Yogev updated LUCENE-4258:

    Attachment: LUCENE-4258.r1412262.patch

New patch with additional testing and bug fixes. 

Currently the term statistics does not take into account field replacements, and therefore
term counts are wrong and CheckIndex fails. 

I can think of two possible solutions for this. The first is for CheckIndex to identify updated
segments and ignore term statistics - is there similar mechanism for deletions?

The other solution is to pre-compute term statistics for updated segments. However, this will
be costly - requires going through the entire posting list for every term, and count non-replaced

Any suggestions?
> Incremental Field Updates through Stacked Segments
> --------------------------------------------------
>                 Key: LUCENE-4258
>                 URL:
>             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,
LUCENE-4258.r1410593.patch, LUCENE-4258.r1412262.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 (

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