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Date: Mon, 24 Nov 2008 13:53:44 -0800 (PST)
From: "Doug Cutting (JIRA)" <jira@apache.org>
To: java-dev@lucene.apache.org
Subject: [jira] Commented: (LUCENE-1451) Can't create NIOFSDirectory w/o
 setting a system property
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    [ https://issues.apache.org/jira/browse/LUCENE-1451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12650344#action_12650344 ] 

Doug Cutting commented on LUCENE-1451:
--------------------------------------

A bit of history, if any care.

Originally Lucene synchronized only on the Directory to coordinate index writes.  This was the primary motivation for the Directory cache.

http://tinyurl.com/62ugs9#l120

Later, lock files were added, but Directory synchronization remained as an optimization, to avoid hitting the filesystem when coordinating threads in the same process.

http://tinyurl.com/5dzsyq#l125

Now Directory-based synchronization has been dropped entirely, so the Directory cache can now go too.


> Can't create NIOFSDirectory w/o setting a system property
> ---------------------------------------------------------
>
>                 Key: LUCENE-1451
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1451
>             Project: Lucene - Java
>          Issue Type: Bug
>            Reporter: Yonik Seeley
>            Assignee: Yonik Seeley
>            Priority: Minor
>             Fix For: 2.9
>
>         Attachments: LUCENE-1451.patch, LUCENE-1451.patch, LUCENE-1451.patch
>
>
> NIOFSDirectory.getDirectory() returns a FSDirectory object

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