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https://issues.apache.org/jira/browse/LUCENE-5236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13793814#comment-13793814
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Paul Elschot commented on LUCENE-5236:
--------------------------------------
The second patch of 13 Oct 2013 improves the javadocs of EliasFanoDocIdSet, and
adds the condition to sufficientlySmallerThanBitSet to always prefer a bit set
when it uses no more than 4 longs.
ant validate
does not complain about tabs anymore here.
I could not find a broken link in the javadocs, maybe because I'm using java
1.7:
ant documentation-lint
fails with the error message "Linting documentation HTML is not supported on
this Java version (1.7)".
There is an http:// reference to archiv.org in the javadoc as plain text (it is
not marked up as a link), and just now it worked fine as a link.
OpenBitSet.bits2words will fail when the number of bits gets just over the
maximum int value, so I prefer not to use it for now.
I am looking forward to the benchmark results on a 64 bits machine.
In the decoder there is a test to use naive bit selection when the needed rank
is less then or equal to 8, and otherwise use broadword bit selection.
I expect this constant 8 to be close to the optimal value on a current 64 bit
machine, but some tuning may be needed.
See also my first comment of 11 July 2013 at LUCENE-5098.
> Use broadword bit selection in EliasFanoDecoder
> -----------------------------------------------
>
> Key: LUCENE-5236
> URL: https://issues.apache.org/jira/browse/LUCENE-5236
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Paul Elschot
> Assignee: Adrien Grand
> Priority: Minor
> Attachments: LUCENE-5236.patch, LUCENE-5236.patch, LUCENE-5236.patch,
> LUCENE-5236.patch, TestDocIdSetBenchmark.java
>
>
> Try and speed up decoding
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