public void shard_data()
{
var partitions = new Dictionary <int, int>();
foreach (var item in _users)
{
var key = JenkinsPartitioner.ResolveToLogicalPartition(item, PARTITION_COUNTS);
if (!partitions.ContainsKey(key))
{
partitions.Add(key, 1);
}
else
{
partitions[key] = ++partitions[key];
}
}
var values = partitions.Values;
var average = values.Average();
var stdev = Math.Sqrt(values.Select(v => Math.Pow(v - average, 2)).Sum() / PARTITION_COUNTS);
Assert.True(values.Count == 10);
Assert.True(stdev < 2);
}
public void get_allways_the_same_partition_for_same_data()
{
var data = "some_string_data";
var partition1 = JenkinsPartitioner.ResolveToLogicalPartition(data, PARTITION_COUNTS);
var partition2 = JenkinsPartitioner.ResolveToLogicalPartition(data, PARTITION_COUNTS);
Assert.Equal(partition1, partition2);
}