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https://issues.apache.org/jira/browse/LUCENE-1313?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12703419#action_12703419
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Michael McCandless commented on LUCENE-1313:
--------------------------------------------
{quote}
Sometimes we want a mixture of
RAMDir segments and FSDir segments to merge (when we've decided
we have too much in ram),
{quote}
I don't think we want to mix RAM & disk merging?
EG when RAM is full, we want to quickly flush it to disk as a single
segment. Merging with disk segments only makes that flush slower?
{quote}
I'm still a little confused as to
why having a wrapper class that manages a disk writer and a ram
writer isn't cleaner?
{quote}
This is functionally the same as not mixing RAM vs disk merging,
right (ie just as "clean")?
> 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
>
>
> 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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