Make String and StringIndex in field cache more RAM efficient
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Key: LUCENE-2141
URL: https://issues.apache.org/jira/browse/LUCENE-2141
Project: Lucene - Java
Issue Type: Improvement
Components: Search
Reporter: Michael McCandless
Fix For: 3.1
Once flex has landed and LUCENE-1990 is done, we should improve the RAM
efficiency of String and StringIndex.
The text data can be stored in native UTF8 (saves decode when loading), and as
byte[] blocks (saves GC load and high RAM overhead of individual strings).
And with packed unsigned ints we can save alot for cases that don't have that
many unique string values.
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