Hi,
Please find below my code for creating and populating cache.
----
package ignite;
import java.util.Arrays;
import javax.cache.configuration.Factory;
import org.apache.ignite.Ignite;
import org.apache.ignite.IgniteCache;
import org.apache.ignite.IgniteSystemProperties;
import org.apache.ignite.Ignition;
import org.apache.ignite.cache.CacheAtomicityMode;
import org.apache.ignite.cache.CacheMode;
import org.apache.ignite.configuration.CacheConfiguration;
import org.apache.ignite.configuration.IgniteConfiguration;
import org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi;
import
org.apache.ignite.spi.discovery.tcp.ipfinder.vm.TcpDiscoveryVmIpFinder;
public class PopulateCache {
public static IgniteCache<String, String> igniteCache=null;
public static void main(String[] args) {
Ignition.setClientMode(false);
System.setProperty(IgniteSystemProperties.IGNITE_QUIET,"false");
System.setProperty("java.net.preferIPv4Stack" , "true");
TcpDiscoverySpi spi = new TcpDiscoverySpi();
TcpDiscoveryVmIpFinder ipFinder = new TcpDiscoveryVmIpFinder();
ipFinder.setAddresses(Arrays.asList("localhost",
"localhost:47500..47509"));
spi.setIpFinder(ipFinder);
IgniteConfiguration cfg = new IgniteConfiguration();
cfg.setDiscoverySpi(spi);
Ignite ignite = Ignition.start(cfg);
CacheConfiguration<String, String> cacheConfig=new
CacheConfiguration<String, String>();
cacheConfig.setBackups(1);
cacheConfig.setCopyOnRead(false);
cacheConfig.setName("testCache");
cacheConfig.setCacheMode(CacheMode.PARTITIONED);
igniteCache=ignite.getOrCreateCache(cacheConfig);
igniteCache.put("100", "abc");
System.out.println("Done....cache");
}
public static Object getCacheData(String key){
if(igniteCache!=null){
return igniteCache.get(key);
}
return key;
}
}
-------------------------------------------------------
Log -
/
You can find that during creation of cache where we are putting just one
value heap is 1.8 Gb.
Topology snapshot [ver=1, servers=1, clients=0, CPUs=4, heap=1.8GB]
/
Now code for getting the cache is below
------------------------------------------------------
package ignite;
import java.util.Arrays;
import java.util.Properties;
import org.apache.ignite.Ignite;
import org.apache.ignite.IgniteCache;
import org.apache.ignite.IgniteSystemProperties;
import org.apache.ignite.Ignition;
import org.apache.ignite.cache.CacheAtomicityMode;
import org.apache.ignite.cache.CacheMode;
import org.apache.ignite.configuration.CacheConfiguration;
import org.apache.ignite.configuration.IgniteConfiguration;
import org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi;
import
org.apache.ignite.spi.discovery.tcp.ipfinder.vm.TcpDiscoveryVmIpFinder;
import static
org.apache.ignite.IgniteSystemProperties.IGNITE_REST_START_ON_CLIENT;
public class StartIgnite {
public static IgniteCache<String, String> igniteCache=null;
public static void startIgnite(){
Ignition.setClientMode(true);
System.setProperty(IgniteSystemProperties.IGNITE_QUIET,"false");
TcpDiscoverySpi spi = new TcpDiscoverySpi();
TcpDiscoveryVmIpFinder ipFinder = new TcpDiscoveryVmIpFinder();
ipFinder.setAddresses(Arrays.asList("localhost",
"localhost:47500..47509"));
spi.setIpFinder(ipFinder);
System.out.println(ipFinder);
IgniteConfiguration cfg = new IgniteConfiguration();
cfg.setDiscoverySpi(spi);
Ignite ignite = Ignition.start(cfg);
CacheConfiguration<String, String> cacheConfig=new
CacheConfiguration<String, String>();
cacheConfig.setName("testCache");
cacheConfig.setCopyOnRead(false);
//cacheConfig.
//cacheConfig.s
cacheConfig.setAtomicityMode(CacheAtomicityMode.ATOMIC);
igniteCache=ignite.getOrCreateCache(cacheConfig);
System.out.println("cache name is "+ igniteCache.getName());
}
public static void stopIgnite(){
Ignition.stop(true);
}
public static String getCacheData(String id){
return igniteCache.get(id);
}
public static void main(String[] args) {
startIgnite();
//System.out.println(Cache.getCacheData(CacheConstants.CLEANSING_TOKENS));
String obj=igniteCache.get("200");
String obj2=igniteCache.get("100");
System.out.println(obj);
System.out.println(obj2);
stopIgnite();
}
}
--------------------------------------------------
When we are executing above code heap gets increased to 3.5 GB.
09:22:55] Topology snapshot [ver=2, servers=1, clients=1, CPUs=4,
heap=3.5GB]
[09:22:57] Topology snapshot [ver=3, servers=1, clients=0, CPUs=4,
heap=1.8GB]
We want to avoid increase in heap size, in production we have cache of
around 30 Gb and we are running the process parallel, causing heap size
full.
Thanks,
Prashant
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