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From "Earwin Burrfoot (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-1651) Make IndexReader.open() always return MSR to simplify (re-)opens.
Date Wed, 03 Jun 2009 16:04:07 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-1651?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Earwin Burrfoot updated LUCENE-1651:
------------------------------------

    Attachment: LUCENE-1651-tag.patch
                LUCENE-1651.patch

Argh! The rename broke test-tag again :) in new and innovative ways.
New patches attached.

> Make IndexReader.open() always return MSR to simplify (re-)opens.
> -----------------------------------------------------------------
>
>                 Key: LUCENE-1651
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1651
>             Project: Lucene - Java
>          Issue Type: Task
>    Affects Versions: 2.9
>            Reporter: Earwin Burrfoot
>            Assignee: Michael McCandless
>             Fix For: 2.9
>
>         Attachments: LUCENE-1651-tag.patch, LUCENE-1651-tag.patch, LUCENE-1651.patch,
LUCENE-1651.patch, LUCENE-1651.patch
>
>
> As per discussion in mailing list, I'm making DirectoryIndexReader.open() always return
MSR, even for single-segment indexes.
> While theoretically valid in the past (if you make sure to keep your index constantly
optimized) this feature is made practically obsolete by per-segment collection.
> The patch somewhat de-hairies (re-)open logic for MSR/SR.
> SR no longer needs an ability to pose as toplevel directory-owning IR.
> All related logic is moved from DIR to MSR.
> DIR becomes almost empty, and copying two or three remaining fields over to MSR/SR, I
remove it.
> Lots of tests fail, as they rely on SR returned from IR.open(), I fix by introducing
SR.getOnlySegmentReader static package-private method.
> Some previous bugs are uncovered, one is fixed in LUCENE-1645, another (partially fixed
in LUCENE-1648) is fixed in this patch. 

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