Not able to find database while joining 2 cache in ignite - ignite

Question

I am working on utilizing distributed joins between multiple ignite cache. I loaded the required data in both the caches and while performing the join it fails while parsing the SQL suggesting "Database not found" (Please see the stack trace).
Caused by: org.h2.jdbc.JdbcSQLException: Database "OFFER" not found; SQL statement:
SELECT "customOrganizationCache".Organization._key, "customOrganizationCache".Organization._val from Organization as organization, "customOfferCache".Offer as offer where organization._id = offer.relationships.customer.targets.key and organization._id = ? [90013-191]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:345)
at org.h2.message.DbException.get(DbException.java:179)
Below is my ignite config file:
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="offerCacheStoreFactory" class="javax.cache.configuration.FactoryBuilder" factory-method="factoryOf">
<constructor-arg><value>com.xyz.exploreignite.cache.CustomOfferCacheStore</value></constructor-arg>
</bean>
<bean id="organizationCacheStoreFactory" class="javax.cache.configuration.FactoryBuilder" factory-method="factoryOf">
<constructor-arg><value>com.xyz.exploreignite.cache.CustomOrganizationCacheStore</value></constructor-arg>
</bean>
<bean id="ignite.cfg" class="org.apache.ignite.configuration.IgniteConfiguration">
<property name="peerClassLoadingEnabled" value="false"/>
<property name="clientMode" value="false"/>
<property name="gridName" value="clusterGrid"/>
<property name="cacheConfiguration">
<list>
<bean class="org.apache.ignite.configuration.CacheConfiguration">
<property name="atomicityMode" value="ATOMIC"/>
<property name="backups" value="1"/>
<property name="name" value="customOrganizationCache"/>
<property name="readThrough" value="true"/>
<property name="writeThrough" value="true"/>
<property name="cacheMode" value="PARTITIONED"/>
<property name="writeBehindEnabled" value="true"/>
<property name="copyOnRead" value="false"/>
<property name="memoryMode" value="OFFHEAP_TIERED"/>
<property name="atomicWriteOrderMode" value="PRIMARY"/>
<property name="indexedTypes" >
<list>
<value>java.lang.String</value>
<value>com.xyz.exploreignite.pojo.Organization</value>
</list>
</property>
<!-- Cache store. -->
<property name="cacheStoreFactory" ref="organizationCacheStoreFactory"/>
<property name="swapEnabled" value="false"/>
<property name="offHeapMaxMemory" value="0"/>
<property name="evictionPolicy">
<!-- LRU eviction policy. -->
<bean class="org.apache.ignite.cache.eviction.lru.LruEvictionPolicy">
<!-- Set the maximum cache size to 1 million (default is 100,000). -->
<property name="maxSize" value="1000000"/>
</bean>
</property>
</bean>
<bean class="org.apache.ignite.configuration.CacheConfiguration">
<property name="atomicityMode" value="ATOMIC"/>
<property name="backups" value="1"/>
<property name="name" value="customOfferCache"/>
<property name="readThrough" value="true"/>
<property name="writeThrough" value="true"/>
<property name="cacheMode" value="PARTITIONED"/>
<property name="writeBehindEnabled" value="true"/>
<property name="copyOnRead" value="false"/>
<property name="memoryMode" value="OFFHEAP_TIERED"/>
<property name="atomicWriteOrderMode" value="PRIMARY"/>
<property name="indexedTypes" >
<list>
<value>java.lang.String</value>
<value>com.xyz.exploreignite.pojo.Offer</value>
</list>
</property>
<!-- Cache store. -->
<property name="cacheStoreFactory" ref="offerCacheStoreFactory"/>
<property name="swapEnabled" value="false"/>
<property name="offHeapMaxMemory" value="0"/>
<property name="evictionPolicy">
<!-- LRU eviction policy. -->
<bean class="org.apache.ignite.cache.eviction.lru.LruEvictionPolicy">
<!-- Set the maximum cache size to 1 million (default is 100,000). -->
<property name="maxSize" value="1000000"/>
</bean>
</property>
</bean>
</list>
</property>
<!-- Explicitly configure TCP discovery SPI to provide list of initial nodes. -->
<property name="discoverySpi">
<bean class="org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi">
<property name="ipFinder">
<!--
Ignite provides several options for automatic discovery that can be used
instead os static IP based discovery. For information on all options refer
to our documentation: http://apacheignite.readme.io/docs/cluster-config
-->
<!-- Uncomment static IP finder to enable static-based discovery of initial nodes. -->
<!--<bean class="org.apache.ignite.spi.discovery.tcp.ipfinder.vm.TcpDiscoveryVmIpFinder">-->
<bean class="org.apache.ignite.spi.discovery.tcp.ipfinder.multicast.TcpDiscoveryMulticastIpFinder">
<property name="addresses">
<list>
<value>127.0.0.1:47500..47509</value>
</list>
</property>
</bean>
</property>
</bean>
</property>
</bean>
Below is the code that I am using while performing the join:
try (Ignite ignite = Ignition.start(
// "/home/impadmin/ignite/apache-ignite-fabric-1.7.0-bin/examples/config/example-cache-ss-cluster.xml"))
// {
"/home/xyz/msheth/install/apache-ignite-fabric-1.7.0-bin/examples/config/example-cache-ss-cluster.xml")) {
try (IgniteCache<String, Offer> customOfferCache = ignite.getOrCreateCache("customOfferCache");
IgniteCache<String, Organization> customOrganizationCache = ignite
.getOrCreateCache("customOrganizationCache")) {
SqlFieldsQuery joinQuery = new SqlFieldsQuery("select organization.displayName "
+ "from Organization as organization, \"customOfferCache\".Offer as offer"
+ " where organization._id = offer.relationships.customer.targets.key "
+ "and organization._id = ?");
joinQuery.setDistributedJoins(true);
long startTime = System.currentTimeMillis();
try (QueryCursor<List<?>> joinCursor = customOrganizationCache
.query(joinQuery.setArgs("542de0b83b2d445f0a0e0f53"))) {
for (List<?> organizationEntry : joinCursor)
System.out.println("Organizations display name: " + organizationEntry);
}
System.out.println("Time to fetch join based record:" + (System.currentTimeMillis() - startTime));
}
}
Please help me to find the root cause.

Answer 1

The issue is in this expression:
offer.relationships.customer.targets.key
Couple of considerations around this:
You are allowed to have nested objects, however Ignite will create flat schema. E.g., customer field can be accessed as a member of Offer table, you should not provide this full path for this. Generally, you should try to avoid nested object when using SQL and create simple POJO classes instead.
However, you are not allowed to query inside a collection. In your case the whole collection of targets is saved as a single object and you can't select based on its contents. You should have separate cache for Target objects and join it with other tables.