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From "Shai Erera (JIRA)" <j...@apache.org>
Subject [jira] [Created] (LUCENE-3126) IndexWriter.addIndexes can make any incoming segment into CFS if it isn't already
Date Thu, 19 May 2011 21:18:47 GMT
IndexWriter.addIndexes can make any incoming segment into CFS if it isn't already
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                 Key: LUCENE-3126
                 URL: https://issues.apache.org/jira/browse/LUCENE-3126
             Project: Lucene - Java
          Issue Type: Improvement
          Components: core/index
            Reporter: Shai Erera
            Priority: Minor
             Fix For: 3.2, 4.0


Today, IW.addIndexes(Directory) does not modify the CFS-mode of the incoming segments. However,
if IndexWriter's MP wants to create CFS (in general), there's no reason why not turn the incoming
non-CFS segments into CFS. We anyway copy them, and if MP is not against CFS, we should create
a CFS out of them.

Will need to use CFW, not sure it's ready for that w/ current API (I'll need to check), but
luckily we're allowed to change it (@lucene.internal).

This should be done, IMO, even if the incoming segment is large (i.e., passes MP.noCFSRatio)
b/c like I wrote above, we anyway copy it. However, if you think otherwise, speak up :).

I'll take a look at this in the next few days.

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