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Posted to dev@lucene.apache.org by "Michael McCandless (JIRA)" <ji...@apache.org> on 2009/05/24 14:58:45 UTC

[jira] Created: (LUCENE-1657) Make "boolean readOnly" a required arg to IndexReader.open

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


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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[jira] Resolved: (LUCENE-1657) Make "boolean readOnly" a required arg to IndexReader.open

Posted by "Michael McCandless (JIRA)" <ji...@apache.org>.
     [ 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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[jira] Updated: (LUCENE-1657) Make "boolean readOnly" a required arg to IndexReader.open

Posted by "Michael McCandless (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/LUCENE-1657?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael McCandless updated LUCENE-1657:
---------------------------------------

    Attachment: LUCENE-1657.patch

Attached patch.  I plan to commit in a day or two.

> 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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