Pavel Tupitsyn created IGNITE-2417:
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Summary: peerClassLoading causes high memory usage on simple cache operations
Key: IGNITE-2417
URL:
https://issues.apache.org/jira/browse/IGNITE-2417 Project: Ignite
Issue Type: Bug
Components: cache
Affects Versions: 1.1.4
Reporter: Pavel Tupitsyn
Priority: Critical
Fix For: 1.6
Issue surfaced in .NET, but this code can be easily ported to Java. Only one node is started.
Without peerClassLoading, Java heap usage is aroung 2GB with this code. With peerClassLoading, heap goes to the max and then there is OutOfMemoryException.
{code}
var cfg = new GridConfiguration
{
SpringConfigUrl = @"example-cache.xml",
JvmOptions = new List<string> { "-Xms1024m", "-Xmx8192m" },
};
using (var grid = GridFactory.Start(cfg))
{
var cache = grid.GetOrCreateCache<object, object>("cache_put_get");
cache.Clear();
var obj = string.Join("", Enumerable.Range(0, 5 * 1024));
const int iterations = 100 * 1000;
for (var i = 0; i < iterations; i++)
cache.Put(i.ToString(), obj);
}
{code}
Config file:
{code}
<beans xmlns="
http://www.springframework.org/schema/beans"
xmlns:xsi="
http://www.w3.org/2001/XMLSchema-instance"
xmlns:util="
http://www.springframework.org/schema/util"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd">
<bean id="grid.cfg" class="org.apache.ignite.configuration.IgniteConfiguration">
<property name="peerClassLoadingEnabled" value="true"/>
<property name="discoverySpi">
<bean class="org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi">
<property name="ipFinder">
<bean class="org.apache.ignite.spi.discovery.tcp.ipfinder.multicast.TcpDiscoveryMulticastIpFinder">
<property name="addresses">
<list>
<!-- In distributed environment, replace with actual host IP address. -->
<value>127.0.0.1:47500..47501</value>
</list>
</property>
</bean>
</property>
</bean>
</property>
</bean>
</beans>
{code}
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