This Bugzilla instance is a read-only archive of historic NetBeans bug reports. To report a bug in NetBeans please follow the project's instructions for reporting issues.
by deleting the nbuserdir/var/cache/mdrstorage folder.....this is only for temporary recovery.How can i solve this exception permanently.
The only way how to recover is to update to NB 6.0 which does not use MDR but Apache Lucene which is much more stable.
Reorganization of java component