GridCacheCheckpointSPI

Package
Description
Configuration
Examples

Click on ^Javadoc link to open Javadoc documentation.

Package

org.gridgain.grid.spi.checkpoint.cache ^Javadoc

Description

GridJdbcCheckpointSpi ^Javadoc uses database to store checkpoints. All checkpoints are stored in the database table and available from all nodes in the grid. Note that every node must have access to the database. The reason of having it is because a job state can be saved on one node and loaded on another (e.g., if a job gets preempted on a different node after node failure).

Configuration

The following configuration parameters can be used to configure GridJdbcCheckpointSpi ^Javadoc :

Setter Method	Description	Optional	Default
`setCacheName(String)` ^Javadoc	Sets cache name to use for storing checkpoints.	Yes	checkpoints (defined by `GridCacheCheckpointSpi.DFLT_CACHE_NAME` ^Javadoc )

Examples

GridCacheCheckpointSpi ^Javadoc can be configured as follows:

GridConfigurationAdapter cfg = new GridConfigurationAdapter();                                    
                                                                                                  
String cacheName = "checkpoints";                                                                 
                                                                                                  
GridCacheConfigurationAdapter cacheConfig = new GridCacheConfigurationAdapter();                  
                                                                                                  
cacheConfig.setName(cacheName);                                                                   
                                                                                                  
GridCacheCheckpointSpi spi = new GridCacheCheckpointSpi();                                        
                                                                                                  
spi.setCacheName(cacheName);                                                                      
                                                                                                  
cfg.setCacheConfiguration(cacheConfig);                                                           
                                                                                                  
// Override default checkpoint SPI.                                                               
cfg.setCheckpointSpi(cpSpi);                                                                      
                                                                                                  
// Start grid.                                                                                    
G.start(cfg);

or from Spring XML configuration file:

<bean id="grid.custom.cfg" class="org.gridgain.grid.GridConfigurationAdapter" singleton="true">       
    ...                                                                                                     
        <!-- Cache configuration. -->                                                                 
        <property name="cacheConfiguration">                                                
            <list>                                                                                    
                <bean class="org.gridgain.grid.cache.GridCacheConfigurationAdapter">        
                    <property name="name" value="CACHE_NAME"/>                    
                </bean>                                                                               
            </list>                                                                                   
        </property>                                                                                   
                                                                                                            
        <!-- SPI configuration. -->                                                                   
        <property name="checkpointSpi">                                                     
            <bean class="org.gridgain.grid.spi.checkpoint.cache.GridCacheCheckpointSpi">    
                <property name="cacheName" value="CACHE_NAME"/>                   
            </bean>                                                                                   
        </property>                                                                                   
    ...                                                                                                     
</bean>

For more information about using Spring framework for configuration click here.

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