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From "Eks Dev (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1329) Remove synchronization in SegmentReader.isDeleted
Date Fri, 22 Aug 2008 09:32:45 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1329?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12624634#action_12624634
] 

Eks Dev commented on LUCENE-1329:
---------------------------------

Mike, did someone measure what this brings? 

This practically reduces need to have many IndexReader-s in MT setup when Index is used in
read only case.






> Remove synchronization in SegmentReader.isDeleted
> -------------------------------------------------
>
>                 Key: LUCENE-1329
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1329
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Index
>    Affects Versions: 2.3.1
>            Reporter: Jason Rutherglen
>            Assignee: Michael McCandless
>            Priority: Trivial
>             Fix For: 2.4
>
>         Attachments: LUCENE-1329.patch, LUCENE-1329.patch, lucene-1329.patch
>
>
> Removes SegmentReader.isDeleted synchronization by using a volatile deletedDocs variable
on Java 1.5 platforms.  On Java 1.4 platforms synchronization is limited to obtaining the
deletedDocs reference.

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