/** * Retrieve index mergeFactor option * * mergeFactor determines how often segment indices are merged by addDocument(). * With smaller values, less RAM is used while indexing, * and searches on unoptimized indices are faster, * but indexing speed is slower. * With larger values, more RAM is used during indexing, * and while searches on unoptimized indices are slower, * indexing is faster. * Thus larger values (> 10) are best for batch index creation, * and smaller values (< 10) for indices that are interactively maintained. * * Default value is 10 * * @return integer */ public function getMergeFactor() { return $this->_index->getMergeFactor(); }