@Test
public void generateStringKeys_whenRemote_equalDistributionOverPartitions() {
Map<Integer, Integer> countsPerPartition = new HashMap<Integer, Integer>();
for (Partition partition : instance.getPartitionService().getPartitions()) {
if (!partition.getOwner().localMember()) {
countsPerPartition.put(partition.getPartitionId(), 0);
}
}
int keysPerPartition = 4;
int keyCount = countsPerPartition.size() * keysPerPartition;
String[] keys = KeyUtils.generateStringKeys("foo", keyCount, KeyLocality.REMOTE, instance);
assertEquals(keyCount, keys.length);
for (String key : keys) {
Partition partition = instance.getPartitionService().getPartition(key);
Integer count = countsPerPartition.get(partition.getPartitionId());
assertNotNull(count);
countsPerPartition.put(partition.getPartitionId(), count + 1);
}
LOGGER.info(countsPerPartition);
for (int count : countsPerPartition.values()) {
assertEquals(keysPerPartition, count);
}
}
@Test
public void generateStringKeys_whenRandom_equalDistributionOverPartitions() {
int keysPerPartition = 4;
int keyCount = keysPerPartition * PARTITION_COUNT;
String[] keys = KeyUtils.generateStringKeys("foo", keyCount, KeyLocality.RANDOM, instance);
assertEquals(keyCount, keys.length);
int[] countPerPartition = new int[PARTITION_COUNT];
for (String key : keys) {
Partition partition = instance.getPartitionService().getPartition(key);
countPerPartition[partition.getPartitionId()]++;
}
for (int count : countPerPartition) {
assertEquals(keysPerPartition, count);
}
}