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LUCENE-3606: Add CHANGES entry 

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene3606@1212022 13f79535-47bb-0310-9956-ffa450edef68
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Uwe Schindler 2011-12-08 18:29:35 +00:00
parent a363e9b564
commit 81c495bbfd
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lucene/CHANGES.txt
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@ -207,6 +207,18 @@ Changes in backwards compatibility policy
* LUCENE-3533: Removed SpanFilters, they created large lists of objects and
did not scale. (Robert Muir)
* LUCENE-3606: IndexReader was made read-only. It is no longer possible to
delete or undelete documents using IndexReader; you have to use IndexWriter
now. As deleting by internal Lucene docID is no longer possible, this
requires adding a unique identifier field to your index. Deleting/relying
upon Lucene docIDs is not recommended anyway, because they can change.
Consequently commit() was removed and IndexReader.open(), openIfChanged(),
and clone() no longer take readOnly booleans or IndexDeletionPolicy
instances. Furthermore, IndexReader.setNorm() was removed. If you need
customized norm values, the recommended way to do this is by modifying
SimilarityProvider to use an external byte[] or one of the new DocValues
fields (LUCENE-3108). (Uwe Schindler, Robert Muir)
Changes in Runtime Behavior
* LUCENE-2846: omitNorms now behaves like omitTermFrequencyAndPositions, if you