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https://issues.apache.org/jira/browse/LUCENE-1476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12668554#action_12668554
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Jason Rutherglen commented on LUCENE-1476:
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Interesting results. Mike, can you post your test code? The Mac can
be somewhat unreliable for performance results as today the
TestDeletesDocIdSet is about the same speed as trunk.
OpenBitSet didn't seem to make much of a difference however when
running your tests I can check it out. The other option is something
like P4Delta which stores the doc ids in a compressed form solely for
iterating. Is this what you mean by sparse representation?
> BitVector implement DocIdSet, IndexReader returns DocIdSet deleted docs
> -----------------------------------------------------------------------
>
> Key: LUCENE-1476
> URL: https://issues.apache.org/jira/browse/LUCENE-1476
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Index
> Affects Versions: 2.4
> Reporter: Jason Rutherglen
> Priority: Trivial
> Attachments: LUCENE-1476.patch, LUCENE-1476.patch, LUCENE-1476.patch,
> LUCENE-1476.patch, LUCENE-1476.patch, quasi_iterator_deletions.diff,
> quasi_iterator_deletions_r2.diff, searchdeletes.alg, TestDeletesDocIdSet.java
>
> Original Estimate: 12h
> Remaining Estimate: 12h
>
> Update BitVector to implement DocIdSet. Expose deleted docs DocIdSet from
> IndexReader.
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