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From "Jason Rutherglen (JIRA)" <>
Subject [jira] [Created] (LUCENE-3245) Realtime terms dictionary
Date Mon, 27 Jun 2011 04:10:47 GMT
Realtime terms dictionary

                 Key: LUCENE-3245
             Project: Lucene - Java
          Issue Type: Improvement
          Components: core/index
    Affects Versions: 4.0
            Reporter: Jason Rutherglen
            Priority: Minor

For LUCENE-2312 we need a realtime terms dictionary.  While ConcurrentSkipListMap may be used,
it has drawbacks in terms of high object overhead which can impact GC collection times and
heap memory usage.  

If we implement a skip list that uses primitive backing arrays, we can hopefully have a data
structure that is [as] fast and memory efficient.

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