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[ https://issues.apache.org/jira/browse/LUCENE-1879?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12774340#action_12774340 ]

Michael Busch commented on LUCENE-1879:
---------------------------------------

{quote}
Dimension 1 is the docs, and dimension 2 is the assignment of fields
into separate partitions?
{quote}

Yes, dimension 1 is unambiguously the docs. Dimension 2 can be the fields into separate parallel indexes, or also what we call today generations for e.g. the norms files.

> Parallel incremental indexing
> -----------------------------
>
> Key: LUCENE-1879
> URL: https://issues.apache.org/jira/browse/LUCENE-1879
> 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:
> http://wiki.apache.org/lucene-java/ParallelIncrementalIndexing
> Discussion on java-dev:
> http://markmail.org/thread/ql3oxzkob7aqf3jd

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