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From "Semen Boikov (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (IGNITE-2417) peerClassLoading causes high memory usage on simple cache operations
Date Fri, 04 Nov 2016 06:40:58 GMT

     [ https://issues.apache.org/jira/browse/IGNITE-2417?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Semen Boikov updated IGNITE-2417:
---------------------------------
    Fix Version/s:     (was: 1.8)
                   1.9

> 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
>            Assignee: Semen Boikov
>            Priority: Blocker
>              Labels: performance
>             Fix For: 1.9
>
>         Attachments: CacheMemoryUsageSelfTest.java, myrecording.zip
>
>
> 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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