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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] [Created] (LUCENE-7268) Remove ArrayUtil.timSort?
Date Sun, 01 May 2016 18:54:13 GMT
Robert Muir created LUCENE-7268:
-----------------------------------

             Summary: Remove ArrayUtil.timSort?
                 Key: LUCENE-7268
                 URL: https://issues.apache.org/jira/browse/LUCENE-7268
             Project: Lucene - Core
          Issue Type: Improvement
            Reporter: Robert Muir


Is there some workload where our timSort is better than the JDK one? Should we just remove
ours if its slower?

Not that its a great test, but i switched Polygon2D edge sorting (just the one where it says
"sort the edges then build a balanced tree from them") from Arrays.sort to ArrayUtil.timSort
and was surprised when performance was much slower for an enormous polygon (http://people.apache.org/~mikemccand/geobench/cleveland.poly.txt.gz)





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