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11.4. Configure Indexing
11.4.1. Configure the Index in Remote Client-Server Mode
In Remote Client-Server Mode, index configuration depends on the provider and its configuration. The indexing mode depends on the provider and whether or not it is local or distributed. The following indexing modes are supported:
- NONE
- LOCAL = indexLocalOnly="true"
- ALL = indexLocalOnly="false"
Index configuration in Remote Client-Server Mode is as follows:
Example 11.3. Configuration in Remote Client-Server Mode
<indexing index="LOCAL">
<property name="default.directory_provider">ram</property>
<!-- Additional configuration information here -->
</indexing>Configure Lucene Caches
By default the Lucene caches will be created as local caches; however, with this configuration the Lucene search results are not shared between nodes in the cluster. To prevent this define the caches required by Lucene in a clustered mode, as seen in the following configuration snippet:
Example 11.4. Configuring the Lucene cache in Remote Client-Server Mode
<cache-container name="clustered" default-cache="repltestcache">
[...]
<replicated-cache name="LuceneIndexesMetadata" mode="SYNC">
<transaction mode="NONE"/>
<indexing index="NONE"/>
</replicated-cache>
<distributed-cache name="LuceneIndexesData" mode="SYNC">
<transaction mode="NONE"/>
<indexing index="NONE"/>
</distributed-cache>
<replicated-cache name="LuceneIndexesLocking" mode="SYNC">
<transaction mode="NONE"/>
<indexing index="NONE"/>
</replicated-cache>
[...]
</cache-container>
These caches are discussed in further detail at in the Red Hat JBoss Data Grid Developer Guide.
11.4.2. Rebuilding the Index
The Lucene index can be rebuilt, if required, by reconstructing it from the data store in the cache.
The index must be rebuilt if:
- The definition of what is indexed in the types has changed.
- A parameter affecting how the index is defined, such as the
Analyserchanges. - The index is destroyed or corrupted, possibly due to a system administration error.
To rebuild the index, obtain a reference to the
MassIndexer and start it as follows:
SearchManager searchManager = Search.getSearchManager(cache); searchManager.getMassIndexer().start();
This operation reprocesses all data in the grid, and therefore may take some time.
Rebuilding the index is also available as a JMX operation.
