As a matter of fact Lucene supports concurrent access to the index from different process (JVM) both in read and write mode [1].
[1] http://wiki.apache.org/lucene-java/LuceneFAQ#Does_Lucene_allow_searching_and_indexing_simultaneously.3F 2009/11/25 Dave Brosius <[email protected]>: > I'm assuming that this is only safe when the repository is not open thru > jackrabbit, otherwise concurrent havoc will insue. -- Sébastien Launay
