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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCENE-1659) Make readOnly setting to IndexReader.open / IndexSearcher ctor explicit
Date Sun, 24 May 2009 16:16:45 GMT
Make readOnly setting to IndexReader.open / IndexSearcher ctor explicit
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                 Key: LUCENE-1659
                 URL: https://issues.apache.org/jira/browse/LUCENE-1659
             Project: Lucene - Java
          Issue Type: Improvement
          Components: Index
            Reporter: Michael McCandless
            Assignee: Michael McCandless
             Fix For: 2.9


Most apps don't need writable 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 that'd likely 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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