IOException: Access is denied from IndexWriter.Optimize

[trond . lindanger]

Hi, 
In my test case, four Quartz jobs are starting each third minute storing 
records in a database followed by an index update.
After doing a test run over a period of 16 hours, I got this exception 
after 10 hours:

java.io.IOException: Access is denied
        at java.io.RandomAccessFile.writeBytes(Native Method)
        at java.io.RandomAccessFile.write(RandomAccessFile.java:456)
        at 
org.apache.lucene.store.FSIndexOutput.flushBuffer(FSDirectory.java:575)
        at 
org.apache.lucene.store.BufferedIndexOutput.flush(BufferedIndexOutput.java:85)
        at 
org.apache.lucene.store.BufferedIndexOutput.writeBytes(BufferedIndexOutput.java:75)
        at 
org.apache.lucene.index.CompoundFileWriter.copyFile(CompoundFileWriter.java:212)
        at 
org.apache.lucene.index.CompoundFileWriter.close(CompoundFileWriter.java:169)
        at 
org.apache.lucene.index.SegmentMerger.createCompoundFile(SegmentMerger.java:148)
        at 
org.apache.lucene.index.IndexWriter.mergeSegments(IndexWriter.java:962)
        at 
org.apache.lucene.index.IndexWriter.flushRamSegments(IndexWriter.java:833)
        at 
org.apache.lucene.index.IndexWriter.optimize(IndexWriter.java:569)
 
Here is the relevant method:

  public void indexItems(boolean createNewIndex, Collection items)
    throws java.io.IOException {
        if (IndexReader.indexExists(indexDir)) {
                while (IndexReader.isLocked(indexDir)) {
                        try {
                                logger.info(indexDir+" is locked, 
waiting...");
                                Thread.sleep(1000); 
                        } catch (InterruptedException e) {
                                e.printStackTrace();
                        }
                }
        }
        logger.info(indexDir+" lock is open."); 
    logger.info("Start writing index located at "+indexDir);
    IndexWriter writer = new IndexWriter(indexDir, analyzer, 
createNewIndex);
    writer.setWriteLockTimeout(10000);
    writer.setUseCompoundFile(true);
 
    Iterator itI = items.iterator();
    while (itI.hasNext()) {
      ItemIF item = (ItemIF) itI.next();
      logger.info("Add item " + item + " to index.");
      writer.addDocument(ItemDocument.makeDocument(item));
    }
    writer.optimize(); // This is where the exception is thrown
    nrOfIndexedItems = writer.docCount();
    writer.close();
    logger.info("Finished writing index.");
  } 


The following environment is used:
WinXP
JDK 1.5
Tomcat 5.5
Lucene 2.0.0
HSQLdb 1.8.0
Quartz 1.6.0
Hibernate 2.1.8
 
- Tomcat/ JDK has read/write access to c:\windows\temp and directory for 
indexing.

Anybody?