Hazelcast entity processor getting null pointer exception on partitions allocated to the DAS node

Technical Discussion
1

Hi,
Is it possible to exclude the DAS node from hazelcast partition groups?

I am using hazelcast to store state:

  @Inject
  private HazelcastInstance hazelcastInstance;

  ...
  IMap<Integer, HashSet<Integer>> chunkInfoMap = hazelcastInstance.getMap(MAP_NAME);
  boolean done = chunkInfoMap.executeOnKey(key, new AddChunkEntryProcessor(chunkNum, max));

AddChunkEntryProcessor adds the chunkNum in the HashSet and checks if the HashSet.length == max.

And when the key is allocated to the DAS node it gets null pointer exception.

key: 42781301 on partition owner: Member [172.18.0.2]:4900

The entity is processed correctly if it is on a Payara server instance with the application deployed.

key: 378550009 on partition owner: Member [172.18.0.3]:5900

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