I am using Infinispan on top of a Cassandra cache store. Whenever I start an Infinispan cluster node, and Cassandra contains data from a previous run, the application immediatly allocates all available memory (1GB) and after a few minutes I get OutOfMemory exceptions in org.infinispan.loaders.cassandra.CassandraCacheStore.purgeInternal.

If I purge Cassandra manually (TRUNCATE InfinispanEntries; TRUNCATE InfinispanExpiration and restart the application, everything works again.

Note that there were only around 10000 entries stored in Cassandra (around 150 MB spread over 2 nodes).

Infinispan loaders configuration:

<loaders passivation="false" preload="false" shared="true">
<loader class="org.infinispan.loaders.cassandra.CassandraCacheStore" fetchPersistentState="false" ignoreModifications="false" purgeOnStartup="false">
<properties>
<!-- property name="autoCreateKeyspace" value="true"/ -->
<property name="host" value="localhost" />
<property name="keySpace" value="Infinispan" />
<property name="entryColumnFamily" value="InfinispanEntries" />
<property name="expirationColumnFamily" value="InfinispanExpiration" />
<property name="sharedKeyspace" value="false" />
<property name="readConsistencyLevel" value="ONE" />
<property name="writeConsistencyLevel" value="ONE" />
<property name="configurationPropertiesFile" value="cassandrapool.properties" />
<property name="keyMapper" value="org.infinispan.loaders.keymappers.DefaultTwoWayKey2StringMapper" />
</properties>
</loader>
</loaders>

Stack trace:

Caused by: java.lang.OutOfMemoryError: Java heap space
at java.nio.ByteBuffer.wrap(ByteBuffer.java:367)
at java.nio.ByteBuffer.wrap(ByteBuffer.java:390)
at org.apache.thrift.TBaseHelper.rightSize(TBaseHelper.java:279)
at org.apache.cassandra.thrift.Column.getName(Column.java:195)
at org.infinispan.loaders.cassandra.CassandraCacheStore.purgeInternal(CassandraCacheStore.java:539)
at org.infinispan.loaders.cassandra.CassandraCacheStore.start(CassandraCacheStore.java:153)
at org.infinispan.loaders.CacheLoaderManagerImpl.start(CacheLoaderManagerImpl.java:136)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at org.infinispan.util.ReflectionUtil.invokeAccessibly(ReflectionUtil.java:236)
at org.infinispan.factories.AbstractComponentRegistry$PrioritizedMethod.invoke(AbstractComponentRegistry.java:885)
at org.infinispan.factories.AbstractComponentRegistry.invokeStartMethods(AbstractComponentRegistry.java:639)
at org.infinispan.factories.AbstractComponentRegistry.internalStart(AbstractComponentRegistry.java:628)
at org.infinispan.factories.AbstractComponentRegistry.start(AbstractComponentRegistry.java:531)
at org.infinispan.factories.ComponentRegistry.start(ComponentRegistry.java:174)
at org.infinispan.CacheImpl.start(CacheImpl.java:521)
at org.infinispan.manager.DefaultCacheManager.createCache(DefaultCacheManager.java:656)
at org.infinispan.manager.DefaultCacheManager.getCache(DefaultCacheManager.java:549)
at org.infinispan.manager.DefaultCacheManager.getCache(DefaultCacheManager.java:521)