[ http://issues.apache.org/jira/browse/LUCENENET-10?page=all ]
Nicolas Brel updated LUCENENET-10:
----------------------------------
Attachment: IndexWriter.patch
Patch for lucene.Net 1.9 RC1
> Supporting deleteDocuments in IndexWriter
> -----------------------------------------
>
> Key: LUCENENET-10
> URL: http://issues.apache.org/jira/browse/LUCENENET-10
> Project: Lucene.Net
> Type: New Feature
> Reporter: Nicolas Brel
> Attachments: IndexWriter.patch
>
> Excerpt from the bug submited by Ning Li for Java Lucene:
> Today, applications have to open/close an IndexWriter and open/close an
> IndexReader directly or indirectly (via IndexModifier) in order to handle a
> mix of inserts and deletes. This performs well when inserts and deletes
> come in fairly large batches. However, the performance can degrade
> dramatically when inserts and deletes are interleaved in small batches.
> This is because the ramDirectory is flushed to disk whenever an IndexWriter
> is closed, causing a lot of small segments to be created on disk, which
> eventually need to be merged.
> We would like to propose a small API change to eliminate this problem. We
> are aware that this kind change has come up in discusions before. See
> http://www.gossamer-threads.com/lists/lucene/java-dev/23049?search_string=indexwriter%20delete;#23049
>
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