Getting error while trying to run using LuceneDatabase

[ghost]

Hello,

Duke is working perfectly fine with Inmemory but very slow. So tried using lucene database but getting error. It is picking the first record and failing immediately with the following error

Exception in thread "main" java.lang.IllegalStateException: TokenStream contract violation: close() call missing

I am not a java programmer not sure on what needs to done to fix this

The database config file is as below

"database class="no.priv.garshol.duke.databases.LuceneDatabase"
param name="path" value="lucene-idx"/>"

Request kind support on resolving the same

Thanks.