15.7.5. Sharing the Global Index
The Query Module in JBoss Data Grid has the option to have a single set of indexes shared by all nodes. The only Lucene directories supported in this mode, and where indexes can be made available to the entire cluster are:
- The JBoss Data Grid directory provider. Either replicated or distributed cache modes can be used when sharing the indexes in this manner.
- A local filesystem-based index, which is periodically synchronized with other nodes using simple file copy. This requires a shared network drive configured externally.
When enabling shared indexes, the
indexLocalOnly attribute of the indexing element must be set to "true". For example:
<namedCache name="globalSharedIndexes"> <clustering mode="distributed"/> <indexing enabled="true" indexLocalOnly="true"> <property name= "default.directory_provider" value="infinispan"/> <property name= "default.exclusive_index_use" value="false"/> </indexing> </namedCache>
hibernate.search is also a valid optional prefix for configuration
property keys.
Important
The Query Module is currently only available as a Technical Preview for JBoss Data Grid 6.1.
