In documentation:
Lucene Java and Luke (Lucene Index Toolbox - http://www.getopt.org/luke/) can also be used to optimize an index. Latest Luke release (v0.8) is based on Lucene v2.3 and compatible with current implementation of Zend_Search_Lucene component (Zend Framework 1.6). Earlier versions of Zend_Search_Lucene implementations need another versions of Java Lucene tools to be compatible: - Zend Framework 1.5 - Java Lucene 2.1 (Luke tool v0.7.1 - http://www.getopt.org/luke/luke-0.7.1/) - Zend Framework 1.0 - Java Lucene 1.4 - 2.1 (Luke tool v0.6 - http://www.getopt.org/luke/luke-0.6/) but ZF is now 1.9 and "Current release of Luke is 1.0.0 and it includes Lucene 3.0 and Hadoop 0.20.1.". Are they compatible? - Valentin Golev
