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https://issues.apache.org/jira/browse/LUCENE-1476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12662092#action_12662092
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Michael McCandless commented on LUCENE-1476:
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{quote}
> If Lucene crashed for some reason the transaction log would be replayed.
{quote}
I think the transaction log is useful for some applications, but could
(should) be built as a separate (optional) layer entirely on top of
Lucene's core. Ie, neither IndexWriter nor IndexReader need to be
aware of the transaction log, which update belongs to which
transaction, etc?
> BitVector implement DocIdSet
> ----------------------------
>
> 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
>
> Original Estimate: 12h
> Remaining Estimate: 12h
>
> BitVector can implement DocIdSet. This is for making
> SegmentReader.deletedDocs pluggable.
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