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Posted to java-user@lucene.apache.org by Jamie <ja...@stimulussoft.com> on 2010/01/22 09:34:28 UTC

Index Growing on Delete

Hi

In our application,on a periodic basis, documents get deleted from the 
index. Although the deleted documents correctly cannot be found when 
searching the index, our users are complaining that their hard drive is 
fulling up, since the index continues to grow in size despite the fact 
that the entries should be deleted from the index. I cannot understand 
why this is the case since I call both writer.expungeDeletes and 
writer.commit(). Any ideas?

Here is my delete function:

public void deleteDocs(Term[] terms) throws MessageSearchException {
               logger.debug("delete docs");
               try {
                   indexLock.lock();
                   openIndex();
                   try {
                       writer.deleteDocuments(terms);
                   } catch (Exception e) {
                       throw new MessageSearchException("failed to 
delete doc from index."+e.getMessage(),e,logger);
                   } finally {
                       try {
                           writer.expungeDeletes(false);
                           writer.commit();
                       } catch (Exception io) {
                           throw new MessageSearchException("failed to 
expunge docs from index"+io.getMessage(),io,logger);
                       }
                   }
               } catch (Throwable t) {
                   logger.error("failed to delete docs from 
index."+t.getMessage(),t);
               } finally {
                   indexLock.unlock();
               }
}

As an aside note, we are moving to Lucene 3.0 from 2.9. What is the 
equivalent of:

QueryParser queryParser = new QueryParser("body",analyzer);
and "Field.Index.TOKENIZED". If I change this, will my index maintain 
compatibility?


Thanks

Jamie


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