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From "Uwe Schindler (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LUCENE-2919) IndexSplitter that divides by primary key term
Date Sat, 18 Jun 2011 00:17:47 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-2919?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Uwe Schindler updated LUCENE-2919:
----------------------------------

    Attachment: LUCENE-2919-filter.patch

Here patch that changes PKIndexSplitter to use a Filter of "allowed" documents.

Its yet hardcoded to be a TermRangeFilter, but a second flexible version could e.g. also use
NumericRangeFilter, WildCardFilter or whatever.

The test in the committed code had a bug (the second half of the index had to contain 1 more
document, maybe that was the bug Mike mentioned or introduced?). The documentation says: If
the midTerm is in the index, its document will be in the second index.

I think the test should also be improved to check indexes with deleted documents.

Maybe the Filter could automatically be negated by a boolean parameter to the FilterIndexReader's
ctor.

> IndexSplitter that divides by primary key term
> ----------------------------------------------
>
>                 Key: LUCENE-2919
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2919
>             Project: Lucene - Java
>          Issue Type: Improvement
>    Affects Versions: 4.0
>            Reporter: Jason Rutherglen
>            Priority: Minor
>         Attachments: LUCENE-2919-filter.patch, LUCENE-2919.patch
>
>
> Index splitter that divides by primary key term.  The contrib MultiPassIndexSplitter
we have divides by docid, however to guarantee external constraints it's sometimes necessary
to split by a primary key term id.  I think this implementation is a fairly trivial change.

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