Client needs custom CacheStore that is configured on server - ignite

Question

I have a client/server test that uses a custom CacheStore implementation. I want the custom CacheStore on the server nodes but not on the client nodes, but Ignite is trying to load the custom implementation on the client. Is there a way to avoid this?
Server code:
IgniteConfiguration igniteCfg = new IgniteConfiguration();
Ignite ignite = Ignition.start(igniteCfg);
CacheConfiguration<String, String> cacheCfg = new CacheConfiguration<>("test");
cacheCfg.setReadThrough(true);
cacheCfg.setCacheStoreFactory(new CacheStoreFactory());
IgniteCache<String, String> cache = ignite.getOrCreateCache(cacheCfg);
CacheStore:
public class CacheStoreFactory implements Factory<CacheStore<? super String, ? super String>> {
#Override
public CacheStore<? super String, ? super String> create() {
return new CacheStoreAdapter<String, String>() {
#Override
public String load(String key) throws CacheLoaderException {
System.out.println("load: key=" + key);
return key;
}
#Override
public void write(Entry<? extends String, ? extends String> entry) throws CacheWriterException {
}
#Override
public void delete(Object key) throws CacheWriterException {
}
};
}
}
Client:
IgniteConfiguration igniteCfg = new IgniteConfiguration();
igniteCfg.setClientMode(true);
Ignite ignite = Ignition.start(igniteCfg);
CacheConfiguration<String, String> cacheCfg = new CacheConfiguration<>("test");
IgniteCache<String, String> cache = ignite.getOrCreateCache(cacheCfg);
String value = cache.get("someKey");
The CacheStore is called correctly on the server, and the client appears to work, but the client logs this error:
Caused by: java.lang.ClassNotFoundException: org.dalsing.ignite.server.test.CacheStoreFactory

Answer 1

The cache store on the client is required for TRANSACTIONAL caches. For ATOMIC caches (this is the default mode), it's not needed, so you can safely ignore the exception.