8.2. Manual optimization

You can programmatically optimize (defragment) a Lucene index from Hibernate Search through the SearchFactory:

Example 8.2. Programmatic index optimization

FullTextSession fullTextSession = Search.getFullTextSession(regularSession);
SearchFactory searchFactory = fullTextSession.getSearchFactory();

searchFactory.optimize(Order.class);
// or
searchFactory.optimize();

The first example optimizes the Lucene index holding Orders; the second, optimizes all indexes.

Note

searchFactory.optimize() has no effect on a JMS backend. You must apply the optimize operation on the Master node.