[ http://issues.apache.org/jira/browse/LUCENE-550?page=all ]
Karl Wettin updated LUCENE-550:
-------------------------------
Summary: InstantiatedIndex - faster but memory consuming index
(was: InstanciatedIndex - faster but memory consuming index)
Affects Version/s: 2.0.0
(was: 1.9)
Description:
An non file centrinc all in memory index. Consumes some 2x the memory of a
RAMDirectory (in a term satured index) but is between 3x-60x faster depending
on application and how one counts. Average query is about 8x faster.
IndexWriter and IndexModifier have been realized in InterfaceIndexWriter and
InterfaceIndexModifier.
InstantiatedIndex is wrapped in a new top layer index facade (class Index) that
comes with factory methods for writers, readers and searchers for unison index
handeling. There are decorators with notification handling that can be used for
automatically syncronizing searchers on updates, et.c.
Index also comes with FS/RAMDirectory implementation.
was:
After fixing the bugs, it's now 4.5 -> 5 times the speed. This is true for both
at index and query time. Sorry if I got your hopes up too much. There are still
things to be done though. Might not have time to do anything with this until
next month, so here is the code if anyone wants a peek.
Not good enough for Jira yet, but if someone wants to fool around with it, here
it is. The implementation passes a TermEnum -> TermDocs -> Fields -> TermVector
comparation against the same data in a Directory.
When it comes to features, offsets don't exists and positions are stored ugly
and has bugs.
You might notice that norms are float[] and not byte[]. That is me who
refactored it to see if it would do any good. Bit shifting don't take many
ticks, so I might just revert that.
I belive the code is quite self explaining.
InstanciatedIndex ii = ..
ii.new InstanciatedIndexReader();
ii.addDocument(s).. replace IndexWriter for now.
Assignee: Karl Wettin
> InstantiatedIndex - faster but memory consuming index
> -----------------------------------------------------
>
> Key: LUCENE-550
> URL: http://issues.apache.org/jira/browse/LUCENE-550
> Project: Lucene - Java
> Issue Type: New Feature
> Components: Store
> Affects Versions: 2.0.0
> Reporter: Karl Wettin
> Assigned To: Karl Wettin
> Attachments: class_diagram.png, class_diagram.png,
> instanciated_20060527.tar, InstanciatedIndexTermEnum.java,
> lucene.1.9-karl1.jpg, lucene2-karl_20060722.tar.gz,
> lucene2-karl_20060723.tar.gz, lucene2karl-061122.tar.gz
>
>
> An non file centrinc all in memory index. Consumes some 2x the memory of a
> RAMDirectory (in a term satured index) but is between 3x-60x faster depending
> on application and how one counts. Average query is about 8x faster.
> IndexWriter and IndexModifier have been realized in InterfaceIndexWriter and
> InterfaceIndexModifier.
> InstantiatedIndex is wrapped in a new top layer index facade (class Index)
> that comes with factory methods for writers, readers and searchers for unison
> index handeling. There are decorators with notification handling that can be
> used for automatically syncronizing searchers on updates, et.c.
> Index also comes with FS/RAMDirectory implementation.
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