How to manage infinispan memory in jboss?

[alireza.alallah]

Hi

I use infinispan local cache in wildfly 10 , i have a jee application that load large data into cache, after serveral minute and work with cache jboss freeze and reached to max heap size memory , how to manage local cache in jboss?

Also , what is different between infinispan stanalone server and infinispan as subsystem in jboss?

<cache-container name="test-cache-container" default-cache="engine-channel-cache" jndi-name="java:jboss/infinispan/container/test-cache-container" statistics-enabled="true">

                <local-cache name="engine-channel-cache" jndi-name="java:jboss/infinispan/container/test-cache-container/engine-channel-cache" statistics-enabled="true"/>

                <local-cache name="transaction-cache" jndi-name="java:jboss/infinispan/container/test-cache-container/transaction-cache" statistics-enabled="true"/>

</cache-container>

Also set statistics-enabled="true" in caches but unable to see statistic in jboss cli as below:

/subsystem=infinispan/cache-container=test-cache-container/local-cache=engine-channel-cache:read-resource(include-runtime=true)

[galder.zamarreno]

Did it run out of memory? You can get heap dumps when OutOfMemoryException happens and you can inspect with tools like Eclipse MAT.

[alireza.alallah]

Yes, I have analyzed with Jconsole but,I can't see infinispan how many used heap memory , totally my cache have 6 keys and add millions items to them, may be problem for this archtitecture?

my code as below:

Cache<String,Queue<T>> infinispanCache = new ConcurrentLinkedQueue<>();

infinispanCache.get("key1"),add(item);

Totally my cache have 6 keys and add millions items to them same above example and Poll item in another threads.

After several minutes jboss reached to max heap.

[alireza.alallah]

new ConcurrentLinkedQueue<>(); was my typo ,  i means new Cache for it's data type

[galder.zamarreno]

-XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/heapdump/oom.hprof 

^ to standalone.conf

Then:

https://www.eclipse.org/mat/

https://stackoverflow.com/questions/542979/using-heapdumponoutofmemoryerror-parameter-for-heap-dump-for-jboss

[alireza.alallah]

I analyzed heap dump with eclipse mat and get memory leaks as below

One instance of "org.infinispan.container.DefaultDataContainer" loaded by "org.jboss.modules.ModuleClassLoader @ 0x80c08270" occupies 295,314,008 (17.81%) bytes. The memory is accumulated in one instance of "org.infinispan.commons.util.concurrent.jdk8backported.EquivalentConcurrentHashMapV8$Node[]"loaded by "org.jboss.modules.ModuleClassLoader @ 0x80d338a8".

Keywords
org.infinispan.commons.util.concurrent.jdk8backported.EquivalentConcurrentHashMapV8$Node[]
org.jboss.modules.ModuleClassLoader @ 0x80c08270
org.jboss.modules.ModuleClassLoader @ 0x80d338a8
org.infinispan.container.DefaultDataContainer

[alireza.alallah]

I increase number of cache and i have 5 cache , and I get same result

Also, i only way to avoid this memory increase max heap size?

[galder.zamarreno]

Hmm, maybe you just need more memory for the data you're using? If you don't need all the data, you could always set expiration for the data and eviction.