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https://issues.apache.org/jira/browse/LUCENE-1119?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael McCandless updated LUCENE-1119:
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Attachment: LUCENE-1119.patch
Attached patch. I plan to commit in a day or two.
> Optimize TermInfosWriter.add
> ----------------------------
>
> Key: LUCENE-1119
> URL: https://issues.apache.org/jira/browse/LUCENE-1119
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Index
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Priority: Minor
> Fix For: 2.3
>
> Attachments: LUCENE-1119.patch
>
>
> I found one more optimization, in how terms are written in
> TermInfosWriter. Previously, each term required a new Term() and a
> new String(). Looking at the cpu time (using YourKit), I could see
> this was adding a non-trivial cost to flush() when indexing Wikipedia.
> I changed TermInfosWriter.add to accept char[] directly, instead.
> I ran a quick test building first 200K docs of Wikipedia. With this
> fix it took 231.31 sec (best of 3) and without the fix it took 236.05
> sec (best of 3) = ~2% speedup.
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