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MapLoader can insert null values into IMap #6830

ahmetmircik opened this issue Nov 23, 2015 · 0 comments


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commented Nov 23, 2015

    public void testNullValuesFromMapLoaderAreInsertedIntoMap() throws Exception {
        Config config = newConfig(new NullLoader());
        HazelcastInstance node = createHazelcastInstance(config);
        IMap map = node.getMap(randomName());

        // load entries.
        map.getAll(new HashSet(asList("key1", "key2", "key3")));

        assertEquals(0, map.size());

     * Always loads null values for requested keys.
    private static class NullLoader implements MapLoader {

        public Object load(Object key) {
            return null;

        public Map loadAll(Collection keys) {
            Map map = new HashMap();
            for (Object key : keys) {
                map.put(key, null);
            return map;

        public Iterable loadAllKeys() {
            return null;
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