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initial stab at compression removal note 

git-svn-id: https://svn.apache.org/repos/asf/lucene/solr/branches/solr@923546 13f79535-47bb-0310-9956-ffa450edef68
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Mark Robert Miller 2010-03-16 02:10:23 +00:00
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@ -34,6 +34,14 @@ Upgrading from Solr 1.4
HTMLStripStandardTokenizerFactory were removed. To strip HTML tags,
HTMLStripCharFilter should be used instead, and it works with any
Tokenizer of your choice. (SOLR-1657)
* Field compression is no longer supported. Fields that were formally
compressed will be uncompressed as index segments are merged. For
shorter fields, this may actually be an improvement, as the compression
used was not very good for short text. Some indexes may get larger though.
The Lucene index format has changed due to the removal of native
compression, and as a result, once you upgrade, previous versions of Solr
will no longer be able to read the index.
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