How to use

setReaderPooling

method

in

org.apache.lucene.index.IndexWriterConfig

@Override
public IndexWriter openIndexWriter(Analyzer analyzer, Similarity similarity) throws IOException {
 if (_indexWriter != null) {
  return _indexWriter;
 }
 ZoieMergePolicy mergePolicy = new ZoieMergePolicy();
 mergePolicy.setMergePolicyParams(_mergePolicyParams);
 mergePolicy.setUseCompoundFile(false);
 IndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_43, analyzer);
 config.setOpenMode(OpenMode.CREATE_OR_APPEND);
 config.setMergeScheduler(_mergeScheduler);
 config.setMergePolicy(mergePolicy);
 config.setReaderPooling(false);
 if (similarity != null) {
  config.setSimilarity(similarity);
 }
 config.setRAMBufferSizeMB(3);
 IndexWriter idxWriter = new IndexWriter(_directory, config);
 _indexWriter = idxWriter;
 return idxWriter;
}

@Override
public IndexWriter openIndexWriter(Analyzer analyzer, Similarity similarity) throws IOException {
 if (_indexWriter != null) {
  return _indexWriter;
 }
 ZoieMergePolicy mergePolicy = new ZoieMergePolicy();
 mergePolicy.setMergePolicyParams(_mergePolicyParams);
 mergePolicy.setUseCompoundFile(false);
 IndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_43, analyzer);
 config.setOpenMode(OpenMode.CREATE_OR_APPEND);
 config.setMergeScheduler(_mergeScheduler);
 config.setMergePolicy(mergePolicy);
 config.setReaderPooling(false);
 if (similarity != null) {
  config.setSimilarity(similarity);
 }
 config.setRAMBufferSizeMB(3);
 IndexWriter idxWriter = new IndexWriter(_directory, config);
 _indexWriter = idxWriter;
 return idxWriter;
}

public IndexWriter openIndexWriter(Analyzer analyzer, Similarity similarity) throws IOException
{
 if (_indexWriter != null)
  return _indexWriter;
 
 ZoieMergePolicy mergePolicy = new ZoieMergePolicy();
 mergePolicy.setMergePolicyParams(_mergePolicyParams);
 mergePolicy.setUseCompoundFile(false);
 IndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_34,analyzer);
 config.setOpenMode(OpenMode.CREATE_OR_APPEND);
 config.setMergeScheduler(_mergeScheduler);
 config.setMergePolicy(mergePolicy);
 
 config.setReaderPooling(false);
 if (similarity!=null){
  config.setSimilarity(similarity);
 }
 config.setRAMBufferSizeMB(3);
 
 IndexWriter idxWriter = new IndexWriter(_directory,config);
 _indexWriter = idxWriter;
 return idxWriter;
}

/**
 * Opens an index modifier.
 * @param analyzer Analyzer
 * @return IndexModifer instance
 */
public IndexWriter openIndexWriter(Analyzer analyzer,Similarity similarity) throws IOException
{
 if(_indexWriter != null) return _indexWriter;
 Directory directory = _dirMgr.getDirectory(true);
 log.info("opening index writer at: "+_dirMgr.getPath());
 
 ZoieMergePolicy mergePolicy = new ZoieMergePolicy();
 mergePolicy.setMergePolicyParams(_mergePolicyParams);
 // hao: autocommit is set to false with this constructor
 IndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_34,analyzer);
 config.setOpenMode(OpenMode.CREATE_OR_APPEND);
 config.setIndexDeletionPolicy(_deletionPolicy);
 config.setMergeScheduler(_mergeScheduler);
 config.setMergePolicy(mergePolicy);
 config.setReaderPooling(false);
 if (similarity!=null){
  config.setSimilarity(similarity);
 }
 config.setRAMBufferSizeMB(5);
 IndexWriter idxWriter = new IndexWriter(directory,config);
 _indexWriter = idxWriter;
 return idxWriter;
}

config.setMergeScheduler(_mergeScheduler);
config.setMergePolicy(mergePolicy);
config.setReaderPooling(false);
if (similarity != null) {
 config.setSimilarity(similarity);

config.setMergeScheduler(_mergeScheduler);
config.setMergePolicy(mergePolicy);
config.setReaderPooling(false);
if (similarity != null) {
 config.setSimilarity(similarity);

c.setReaderPooling(r.nextBoolean());
return c;