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https://issues.apache.org/jira/browse/LUCENE-1607?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yonik Seeley updated LUCENE-1607:
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Attachment: LUCENE-1607.patch
Here's a completely lockless and memory barrier free intern() cache.
This default would be more back compatible since programs may rely on String
instances being interned via String.intern().
It does not yet include corresponding Lucene code changes to use the
StringInterner.
Thoughts?
> String.intern() faster alternative
> ----------------------------------
>
> Key: LUCENE-1607
> URL: https://issues.apache.org/jira/browse/LUCENE-1607
> Project: Lucene - Java
> Issue Type: Improvement
> Reporter: Earwin Burrfoot
> Fix For: 2.9
>
> Attachments: intern.patch, LUCENE-1607.patch
>
>
> By using our own interned string pool on top of default, String.intern() can
> be greatly optimized.
> On my setup (java 6) this alternative runs ~15.8x faster for already interned
> strings, and ~2.2x faster for 'new String(interned)'
> For java 5 and 4 speedup is lower, but still considerable.
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