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From "Shai Erera (JIRA)" <>
Subject [jira] Commented: (LUCENE-1879) Parallel incremental indexing
Date Fri, 26 Mar 2010 20:24:27 GMT


Shai Erera commented on LUCENE-1879:

Hi Grant - I believe what you describe is related to solving the incremental field updates
problem, where someone might want to change the value of a specific document's field. But
PI is not about that. Rather, PI is about updating a whole slice at once, ie, changing a field's
value across all docs, or adding a field to all docs (I believe such question was asked on
the user list few days ago). I've listed above several scenarios where PI is useful for, but
unfortunately it is unrelated to incremental field updates.

If I misunderstood you, then please clarify.

Re incremental field updates, I think your direction is interesting, and deserves discussion,
but in a separate issue/thread?

> Parallel incremental indexing
> -----------------------------
>                 Key: LUCENE-1879
>                 URL:
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: Index
>            Reporter: Michael Busch
>            Assignee: Michael Busch
>             Fix For: 3.1
>         Attachments: parallel_incremental_indexing.tar
> A new feature that allows building parallel indexes and keeping them in sync on a docID
level, independent of the choice of the MergePolicy/MergeScheduler.
> Find details on the wiki page for this feature:
> Discussion on java-dev:

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