def test_hash(self):
expected = [ # Expected values are from the Java implementation
# 00000000 -> HEAP_DATA_OVERHEAD
(b"00000000key-1", 1228513025, 107),
(b"12345678key-1", 1228513025,
107), # Heap data overhead should not matter
(b"00000000key-2", 1503416236, 105),
(b"00000000key-3", 1876349747, 218),
(b"00000000key-4", -914632498, 181),
(b"00000000key-5", -803210507, 111),
(b"00000000key-6", -847942313, 115),
(b"00000000key-7", 1196747334, 223),
(b"00000000key-8", -1444149994, 208),
(b"00000000key-9", 1182720020, 140),
# Test with different lengths
(b"00000000", -1585187909, 238),
(b"00000000a", -1686100800, 46),
(b"00000000ab", 312914265, 50),
(b"00000000abc", -2068121803, 208),
(b"00000000abcd", -973615161, 236),
(b"", -1585187909, 238),
]
for key, mm_hash, partition_id in expected:
h = murmur_hash3_x86_32(bytearray(key))
p = hash_to_index(h, 271)
self.assertEqual(h, mm_hash)
self.assertEqual(p, partition_id)
def get_partition_id(self, key):
if self.partition_count == 0:
# Partition count can not be zero for the SYNC mode.
# On the SYNC mode, we are waiting for the first connection to be established.
# We are initializing the partition count with the value coming from the server with authentication.
# This error is used only for ASYNC mode client.
raise ClientOfflineError()
return hash_to_index(key.get_partition_hash(), self.partition_count)
def get_partition_id(self, key):
"""
Returns the partition id for a Data key.
:param key: (object), the data key.
:return: (int), the partition id.
"""
data = self._client.serialization_service.to_data(key)
count = self.get_partition_count()
return hash_to_index(data.get_partition_hash(), count)
def test_hash(self):
expected = [
("key-1", 1228513025, 107),
("key-2", 1503416236, 105),
("key-3", 1876349747, 218),
("key-4", -914632498, 181),
("key-5", -803210507, 111),
("key-6", -847942313, 115),
("key-7", 1196747334, 223),
("key-8", -1444149994, 208),
("key-9", 1182720020, 140),
]
for key, hash, partition_id in expected:
h = murmur_hash3_x86_32(key, 0, len(key))
p = hash_to_index(h, 271)
self.assertEqual(h, hash)
self.assertEqual(p, partition_id)
def test_hash(self):
expected = [
(b"key-1", 1228513025, 107),
(b"key-2", 1503416236, 105),
(b"key-3", 1876349747, 218),
(b"key-4", -914632498, 181),
(b"key-5", -803210507, 111),
(b"key-6", -847942313, 115),
(b"key-7", 1196747334, 223),
(b"key-8", -1444149994, 208),
(b"key-9", 1182720020, 140),
]
for key, hash, partition_id in expected:
h = murmur_hash3_x86_32(key, 0, len(key))
p = hash_to_index(h, 271)
self.assertEqual(h, hash)
self.assertEqual(p, partition_id)
def get_partition_id(self, key):
data = self._client.serializer.to_data(key)
count = self.get_partition_count()
return hash_to_index(data.get_partition_hash(), count)
def get_partition_id(self, key):
data = self._client.serialization_service.to_data(key)
count = self.get_partition_count()
return hash_to_index(data.get_partition_hash(), count)
