Poor performance race condition in FieldCacheImpl
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Key: LUCENE-651
URL: http://issues.apache.org/jira/browse/LUCENE-651
Project: Lucene - Java
Issue Type: Improvement
Components: Search
Affects Versions: 2.0.0
Reporter: Oliver Hutchison
Priority: Minor
A race condition exists in FieldCacheImpl that causes a significant performance
degradation if multiple threads concurrently request a value that is not yet
cached. The degradation is particularly noticable in large indexes and when
there a many concurent requests for the cached value.
For the full discussion see the mailing list thread 'Poor performance "race
condition" in FieldSortedHitQueue'
(http://www.gossamer-threads.com/lists/lucene/java-user/38717).
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