Pavel Tupitsyn created IGNITE-2417:
--------------------------------------
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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