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From testn <te...@doramail.com>
Subject Re: Java Heap Space -Out Of Memory Error
Date Tue, 04 Sep 2007 11:49:46 GMT

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http://wiki.apache.org/jakarta-lucene/LargeScaleDateRangeProcessing



Sebastin wrote:
> 
> Hi All,
>        i used to search 3 Lucene Index store of size 6 GB,10 GB,10 GB of
> records using MultiReader class.
> 
> here is the following code snippet:
> 
> 
>      
>                                          Directory indexDir2 = 
>                       FSDirectory.getDirectory(indexSourceDir02,false);
>                                          IndexReader indexSource2 =
> IndexReader.open(indexDir2);
>                                        Directory indexDir3 = 
>                                             
> FSDirectory.getDirectory(indexSourceDir03,false);
>                                          IndexReader indexSource3 =
> IndexReader.open(indexDir3);
>                                          Directory indexDir4 = 
>                                             
> FSDirectory.getDirectory(indexSourceDir04,false);
>                                          IndexReader indexSource4 =
> IndexReader.open(indexDir4); 
>                                         
>            
>                                          
>         IndexReader[] readArray =
> {indexSource2,indexSource3,indexSource4};
>         //merged reader
>         IndexReader mergedReader = new MultiReader(readArray);
>         IndexSearcher is = new IndexSearcher(mergedReader);
>         
>                                 
>                                  QueryParser parser = 
>                                      new QueryParser("contents" ,new
> StandardAnalyzer());
>                                  
>                                  
>                                 String searchQuery= 
>                                        new
> StringBuffer().append(inputNo).append(" AND dateSc:["
> ).append(fromDate).append(" TO ").append(toDate).append("]").append("
> ").append("AND").append(" ").append(callTyp).toString();
>                                    
>                                  
>                                  
>                                  Query callDetailquery =
> parser.parse(searchQuery);
>                                  
>                                  hits = is.search(callDetailquery); 
> 
> 
> it takes 300 MB of RAM for every search and it is very very slow is there
> any other way to control the Memory and to make search faster.i use
> SINGLETON  to use the IndexSearcher as a one time used object for all the
> instances.
> 

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