Off-heap eviction configuration

[Jose Otavio Rizzatti]

Hi everyone,

I'm having issues getting the off-heap eviction to work. The nodes in my
cluster are failing due to OutOfMemory errors.
I'm currently trying to get it to work like this:

    IgniteConfuration igniteConfiguration = new IgniteConfiguration();

    DataStorageConfiguration dataStorageConfig = new
DataStorageConfiguration();

    DataRegionConfiguration dataRegionConfig = new
DataRegionConfiguration();
    dataRegionConfig.setInitialSize((long) Math.ceil(0.2 *
offHeapMemoryMax)); // 20% of 256MB
    dataRegionConfig.setMaxSize(offHeapMemoryMax); // 256MB, for testing
purposes
    dataRegionConfig.setPageEvictionMode(DataPageEvictionMode.RANDOM_2_LRU);
    dataRegionConfig.setEvictionThreshold(0.9);
    dataRegionConfig.setName("OffHeapRegion");

    // tried both default data region, and setting a data region list, but
neither
    dataStorageConfig.setDefaultDataRegionConfiguration(dataRegionConfig);
    igniteConfiguration.setDataStorageConfiguration(dataStorageConfig);

    CacheConfiguration cacheConfiguration = new CacheConfiguration();
    cacheConfiguration.setName("myCache");
    cacheConfiguration.setCacheMode(CacheMode.PARTITIONED);
    cacheConfiguration.setDataRegionName("OffHeapRegion");
    cacheConfiguration.setBackups(1);
    igniteConfiguration.setCacheConfiguration(cacheConfiguration);

    Ignite.start(igniteConfiguration);
    ignite.getOrCreateCache("myCache");

I can use the cache from my application, but once the current off-heap size
is reached, I see this in the logs:

ERROR [2018-06-15 09:37:16,095]
org.apache.ignite.internal.processors.cache.distributed.dht.atomic.GridDhtAtomicCache:
<metadata> Unexpected exception during cache update
! org.apache.ignite.internal.mem.IgniteOutOfMemoryException: Not enough
memory allocated (consider increasing data region size or enabling
evictions) [policyName=OffHeapRegion, size=262.1 MB]
! at
org.apache.ignite.internal.pagemem.impl.PageMemoryNoStoreImpl.allocatePage(PageMemoryNoStoreImpl.java:292)
! at
org.apache.ignite.internal.processors.cache.persistence.freelist.FreeListImpl.allocateDataPage(FreeListImpl.java:456)
! at
org.apache.ignite.internal.processors.cache.persistence.freelist.FreeListImpl.insertDataRow(FreeListImpl.java:494)
! at
org.apache.ignite.internal.processors.cache.persistence.RowStore.addRow(RowStore.java:90)
! at
org.apache.ignite.internal.processors.cache.IgniteCacheOffheapManagerImpl$CacheDataStoreImpl.createRow(IgniteCacheOffheapManagerImpl.java:1255)
! at
org.apache.ignite.internal.processors.cache.GridCacheMapEntry$AtomicCacheUpdateClosure.update(GridCacheMapEntry.java:4408)
! at
org.apache.ignite.internal.processors.cache.GridCacheMapEntry$AtomicCacheUpdateClosure.call(GridCacheMapEntry.java:4204)
! at
org.apache.ignite.internal.processors.cache.GridCacheMapEntry$AtomicCacheUpdateClosure.call(GridCacheMapEntry.java:3918)
! at
org.apache.ignite.internal.processors.cache.persistence.tree.BPlusTree$Invoke.invokeClosure(BPlusTree.java:2988)
! at
org.apache.ignite.internal.processors.cache.persistence.tree.BPlusTree$Invoke.access$6200(BPlusTree.java:2882)
! at
org.apache.ignite.internal.processors.cache.persistence.tree.BPlusTree.invokeDown(BPlusTree.java:1713)
! at
org.apache.ignite.internal.processors.cache.persistence.tree.BPlusTree.invoke(BPlusTree.java:1602)
! ... 82 common frames omitted

The log mentions eviction being off and when checking the cache configs
with visorcmd, it says that eviction policy is off too.
What am I doing wrong here?

Thanks,

Jose Rizzatti