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https://issues.apache.org/jira/browse/LUCENE-1313?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12694810#action_12694810
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Jason Rutherglen edited comment on LUCENE-1313 at 4/1/09 3:50 PM:
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The patch includes RealtimeIndex a basic class for performing atomic
transactional realtime indexing and search. A single thread
periodically flushes to disk the ram index. It relies on
LUCENE-1516.
We need to benchmark this, specifically 1) realtime w/ramdir
transaction 2) realtime w/queued documents transaction 3) normal
indexing. Realtime w/ramdir encodes the transaction to a
RAMDirectory which is added to the RAM writer using
IW.addIndexesNoOptimize. Option 1 may be slower than option 2,
however if the system is replicating it may be the only option?
Long term I believe we need to implement searching over the
IndexWriter ram buffer (if possible). However I am not sure how
option 1 and replication would work with it?
was (Author: jasonrutherglen):
The patch includes RealtimeIndex a basic class for performing atomic
transactional realtime indexing and search. A single thread
periodically flushes to disk the ram index. It relies on
LUCENE-1516.
We need to benchmark this, specifically 1) realtime w/ramdir
transaction 2) realtime w/queued documents transaction 3) normal
indexing. Realtime w/ramdir encodes the transaction to a
RAMDirectory which is added to the RAM writer using
IW.addIndexesNoOptimize. Option 1 may be slower than option 2,
however if the system is replicating it may be the only option?
Long term I believe we need to implement searching over the
IndexWriter ram buffer (if possible). However I am not sure how
option 2 would work with it?
> 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.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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