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Configuring Metrics

Metrics collection is not a free operation and might affect the performance of an application. For this reason, some metrics are disabled by default.

Enabling Cache Metrics

Cache metrics show statistics on the amount of data stored in caches, the total number and frequency of cache operations, etc. as well as some cache configuration properties for information purposes.

To enable cache metrics, use one of the methods described below for each cache you want to monitor.

<property name="cacheConfiguration">
    <list>
        <bean class="org.apache.ignite.configuration.CacheConfiguration">
            <property name="name" value="mycache"/>
            <!-- Enable statistics for the cache. -->
            <property name="statisticsEnabled" value="true"/>
        </bean>
    </list>
</property>
IgniteConfiguration cfg = new IgniteConfiguration();

CacheConfiguration cacheCfg = new CacheConfiguration("test-cache");

// Enable statistics for the cache.
cacheCfg.setStatisticsEnabled(true);

cfg.setCacheConfiguration(cacheCfg);

// Start the node.
Ignite ignite = Ignition.start(cfg);
var cfg = new IgniteConfiguration
{
    CacheConfiguration = new[]
    {
        new CacheConfiguration("my-cache")
        {
            EnableStatistics = true
        }
    }
};

var ignite = Ignition.Start(cfg);
This API is not presently available for C++. You can use XML configuration.

For each cache on a node, GridGain creates two JMX Beans: one with cache information specific to the node, and one with global (cluster-wide) information about the cache.

Local cache information MBean:
group=<Cache_Name>,name="org.apache.ignite.internal.processors.cache.CacheLocalMetricsMXBeanImpl"
Global cache information MBean:
group=<Cache_Name>,name="org.apache.ignite.internal.processors.cache.CacheClusterMetricsMXBeanImpl"

Enabling Data Region Metrics

Data region metrics expose information about data regions, including memory and storage size of the region. Enable data region metrics for every region you want to collect the metrics for.

Data region metrics can be enabled in two ways:

The following example illustrates how to enable metrics for the default data region and one custom data region.

<bean class="org.apache.ignite.configuration.IgniteConfiguration" id="ignite.cfg">
    <property name="dataStorageConfiguration">
        <bean class="org.apache.ignite.configuration.DataStorageConfiguration">
            <property name="defaultDataRegionConfiguration">
                <bean class="org.apache.ignite.configuration.DataRegionConfiguration">
                    <!-- enable mertrics for the default data region -->
                    <property name="metricsEnabled" value="true"/>
                    <!-- other properties -->
                </bean>
            </property>
            <property name="dataRegionConfigurations">
                <list>
                    <bean class="org.apache.ignite.configuration.DataRegionConfiguration">
                        <!-- Custom region name. -->
                        <property name="name" value="myDataRegion"/>
                        <!-- Enable metrics for this data region  -->
                        <property name="metricsEnabled" value="true"/>

                        <property name="persistenceEnabled" value="true"/>
                        <!-- other properties -->
                    </bean>
                </list>
            </property>
        </bean>
    </property>
</bean>
IgniteConfiguration cfg = new IgniteConfiguration();

DataStorageConfiguration storageCfg = new DataStorageConfiguration();

DataRegionConfiguration defaultRegion = new DataRegionConfiguration();
defaultRegion.setMetricsEnabled(true);

storageCfg.setDefaultDataRegionConfiguration(defaultRegion);

// Create a new data region.
DataRegionConfiguration regionCfg = new DataRegionConfiguration();

// Region name.
regionCfg.setName("myDataRegion");

// Enable metrics for this region.
regionCfg.setMetricsEnabled(true);

// Set the data region configuration.
storageCfg.setDataRegionConfigurations(regionCfg);

// Other properties

// Apply the new configuration.
cfg.setDataStorageConfiguration(storageCfg);

Ignite ignite = Ignition.start(cfg);
var cfg = new IgniteConfiguration
{
    DataStorageConfiguration = new DataStorageConfiguration
    {
        DefaultDataRegionConfiguration = new DataRegionConfiguration
        {
            Name = DataStorageConfiguration.DefaultDataRegionName,
            MetricsEnabled = true
        },
        DataRegionConfigurations = new[]
        {
            new DataRegionConfiguration
            {
                Name = "myDataRegion",
                MetricsEnabled = true
            }
        }
    }
};

var ignite = Ignition.Start(cfg);
This API is not presently available for C++. You can use XML configuration.

Data region metrics can be enabled/disabled at runtime via the following JMX Bean:

Data Region MBean
org.apache:group=DataRegionMetrics,name=<Data Region Name>

Persistence-related metrics can be enabled/disabled in the data storage configuration:

<bean class="org.apache.ignite.configuration.IgniteConfiguration" id="ignite.cfg">
    <property name="dataStorageConfiguration">
        <bean class="org.apache.ignite.configuration.DataStorageConfiguration">

          <!-- persistent storage metrics -->
            <property name="metricsEnabled" value="true"/>

            <property name="defaultDataRegionConfiguration">
                <bean class="org.apache.ignite.configuration.DataRegionConfiguration">
                    <property name="persistenceEnabled" value="true"/>

                    <!-- enable mertrics for the default data region -->
                    <!--property name="metricsEnabled" value="true"/-->
                    <!-- other properties -->
                </bean>
            </property>
        </bean>
    </property>
</bean>
IgniteConfiguration cfg = new IgniteConfiguration();

DataStorageConfiguration storageCfg = new DataStorageConfiguration();
storageCfg.setMetricsEnabled(true);

// Apply the new configuration.
cfg.setDataStorageConfiguration(storageCfg);

Ignite ignite = Ignition.start(cfg);
var cfg = new IgniteConfiguration
{
    DataStorageConfiguration = new DataStorageConfiguration
    {
        MetricsEnabled = true
    }
};

var ignite = Ignition.Start(cfg);
This API is not presently available for C++. You can use XML configuration.

You can enable "Persistent Store" metrics at runtime via the following MXBean:

Persistent Store MBean
org.apache:group="Persistent Store",name=DataStorageMetrics
Operation Description

EnableMetrics

Enable persistent data storage metrics.

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Last updated on May 25, 2023