Make PulsingCodec (wrapping StandardCodec) the default codec
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Key: LUCENE-2492
URL: https://issues.apache.org/jira/browse/LUCENE-2492
Project: Lucene - Java
Issue Type: Improvement
Components: Index
Affects Versions: 4.0
Reporter: Michael McCandless
Assignee: Michael McCandless
Fix For: 4.0
PulsingCodec can provides good gains, by inlining the postings into the terms
dict for rare terms. This is especially helpful for primary key like fields,
since every term is rare and batch lookups are common (see
http://chbits.blogspot.com/2010/06/lucenes-pulsingcodec-on-primary-key.html for
a simple perf test), but it should also be a gain for ordinary fields, thanks
to Zipf's law.
I think we should make it the default....
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