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https://issues.apache.org/jira/browse/LUCENE-1313?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12708100#action_12708100
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Jason Rutherglen commented on LUCENE-1313:
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{quote}IW.optimize should mean all RAM segments are merged into
the single on-disk segment{quote}
Yes.
{quote}IW.expungeDeletes should also apply to RAM segments, ie
if RAM segments have pending deletes, they are merged away
(possibly entirely in RAM, ie the RAM merge policy could simply
merge to a new RAM segment)?{quote}
Yes.
{quote}we should fix the indexing chain to always use
SegmentWriteState's Directory and not pass Directory to the
ctors{quote}
Yep.
The next patch will have these features.
> Realtime Search
> ---------------
>
> Key: LUCENE-1313
> URL: https://issues.apache.org/jira/browse/LUCENE-1313
> Project: Lucene - Java
> Issue Type: New Feature
> Components: Index
> Affects Versions: 2.4.1
> Reporter: Jason Rutherglen
> Priority: Minor
> Fix For: 2.9
>
> Attachments: LUCENE-1313.jar, LUCENE-1313.patch, LUCENE-1313.patch,
> LUCENE-1313.patch, LUCENE-1313.patch, LUCENE-1313.patch, LUCENE-1313.patch,
> LUCENE-1313.patch, LUCENE-1313.patch, LUCENE-1313.patch, lucene-1313.patch,
> lucene-1313.patch, lucene-1313.patch, lucene-1313.patch
>
>
> Realtime search with transactional semantics.
> Possible future directions:
> * Optimistic concurrency
> * Replication
> Encoding each transaction into a set of bytes by writing to a RAMDirectory
> enables replication. It is difficult to replicate using other methods
> because while the document may easily be serialized, the analyzer cannot.
> I think this issue can hold realtime benchmarks which include indexing and
> searching concurrently.
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