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https://issues.apache.org/jira/browse/LUCENE-5760?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir resolved LUCENE-5760.
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Resolution: Fixed
Fix Version/s: 5.0
4.9
> Speed up BufferedIndexInput.randomAccessSlice
> ---------------------------------------------
>
> Key: LUCENE-5760
> URL: https://issues.apache.org/jira/browse/LUCENE-5760
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Robert Muir
> Fix For: 4.9, 5.0
>
> Attachments: LUCENE-5760.patch
>
>
> Today this uses the default implementation, e.g. for readInt(pos):
> {code}
> @Override
> public int readInt(long pos) throws IOException {
> slice.seek(pos);
> return slice.readInt();
> }
> {code}
> But this causes the bounds to be checked twice. Just like we did for MMap, we
> can provide a faster implementation that only checks once: yields ~30%
> speedup.
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