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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (LUCENE-1657) Make "boolean readOnly" a required arg to IndexReader.open
Date Thu, 28 May 2009 10:16:46 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-1657?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael McCandless resolved LUCENE-1657.
----------------------------------------

    Resolution: Fixed

> Make "boolean readOnly" a required arg to IndexReader.open
> ----------------------------------------------------------
>
>                 Key: LUCENE-1657
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1657
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Index
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>            Priority: Minor
>             Fix For: 2.9
>
>         Attachments: LUCENE-1657.patch
>
>
> Most apps don't need read/write IndexReader, and, a readOnly
> IndexReader has better concurrent performance.
> I'd love to simply default readOnly to true, and you'd have to specify
> "false" if you want a read/write reader (I think that's the natural
> default), but I think that'd break too many back-compat cases.
> So the workaround is to make the parameter explicit, in 2.9.
> I think even for IndexSearcher's methods that open an IndexReader
> under the hood, we should also make the parameter explicit.

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