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-- George

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--- Begin Message ---
S�rgio,

What is the stack trace on that exception?  That will help point to where in 
the optimize process the issue is occurring.

I noticed similar behavior during an optimization on a large index on 1.9 & 2.0 
only when term vectors were enabled.  As I didn't really need term vectors I 
disabled them and then everything was fine.  With version 2.3 and beyond I have 
not encountered any issues during an optimize when term vectors were enabled 
(we use them for faceting and a few other things).  I'd suggest going with a 
newer version of Lucene.Net in a test environment to see if it is reproducible 
there.

Michael

-----Original Message-----
From: S�rgio Ara�jo (JIRA) [mailto:[email protected]] 
Sent: Monday, October 12, 2009 9:52 AM
To: [email protected]
Subject: [jira] Created: (LUCENENET-195) IndexWriter.Optimize(); return an 
exception

IndexWriter.Optimize(); return an exception
-------------------------------------------

                 Key: LUCENENET-195
                 URL: https://issues.apache.org/jira/browse/LUCENENET-195
             Project: Lucene.Net
          Issue Type: Bug
         Environment: Framework 1.1 .NET
            Reporter: S�rgio Ara�jo


We are using the Lucene search engine a couple of months, on the first approach 
seems a very good and high-performance engine.

We are using the your "Lucene.net.dll"API version 2.0.0.4. 

We have an index with 20GB approximately, all hours are added news docs to 
index and a time per day the optimization is done at 9 pm.

During a couple of days everything ran fine even a day that optimization 
process "writer.Optimize();" return the following exception:

"Source array was not long enough. Check srcIndex and length, and the array�s 
lower bounds."

Here you can find some parts of my code:

Document doc; doc = null;
IndexWriter writer; writer = null;
writer = new IndexWriter(strArticleIndexFolder, new StandardAnalyzer(), isNew);

writer.SetMergeFactor(1000);
writer.SetMaxMergeDocs(10000);

foreach (ArticleIndexFull objArticleIndex in lstArticleIndexFull)
{
doc = new Document();
doc.Add(newField(O4kFreeSearchTag.ArticleLuceneId,objArticleIndex.ArticleIndexFullId.ToString(),
 Field.Store.YES, Field.Index.TOKENIZED, Field.TermVector.YES));
doc.Add(newField(O4kFreeSearchTag.ArticleId,objArticleIndex.ArticleId.ToString(),Field.Store.YES,
 Field.Index.TOKENIZED, Field.TermVector.YES));
doc.Add(newField(O4kFreeSearchTag.ProductionDate,FactoryBLL.ArticleIndex.ClearCharStream(AlphaNumeric.ConvertToString(objArticleIndex.ProductionDate.ToString("yyyyMMdd",System.Globalization.CultureInfo.GetCultureInfo("en-US")),String.Empty)),Field.Store.NO,
 Field.Index.TOKENIZED, Field.TermVector.YES));
....

writer.AddDocument(doc);
}

if (System.DateTime.Now.Hour == 21)
{
writer.Optimize();
}
writer.Close();


If we migrate to last version available in this case the 2.4.3 my problem will 
be fixed?
Has my code any kind of problem?

We will appreciate your help.


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